# HOI4 Japan Guide 2026: Focus Order, Doctrines and Strike South

> A full Japan build for the No Compromise, No Surrender DLC: the creator's posted focus order and political-power spend order, the new doctrine-mastery and naval-dominance mechanics, a captured division template and ship/aircraft designer, and the pivot from the China war into a Strike South world conquest. Screen-only numbers and comment disagreements are called out separately from what the video actually says.

- **Game:** Hearts of Iron IV
- **Category:** Nations
- **Author:** LongBeam (https://guides-factory.com/about)
- **Difficulty:** Intermediate
- **Reading time:** 20 min
- **Published:** 2026-08-09
- **Updated:** 2026-08-31
- **Tags:** Division templates, Economy, Focus tree, Navy
- **Adapted from:** [ESG - Become Unstoppable As Japan In HOI4 - Full Guide: No Compromise, No Surrender DLC](https://www.youtube.com/watch?v=xql9BHs9DbA)
- **Canonical URL:** https://guides-factory.com/guides/hoi4-japan-guide

---

<p class="note">Up to date for the "No Compromise, No Surrender" DLC (named in the video's title and description; no patch version is spoken or shown). Checked against the video dated 2025-12-26.</p>

## 🎯 The core idea

This build rushes Japan's forked focus tree toward restoring the Emperor (the
Chrysanthemum Throne) while grinding doctrines and a fixed political-power spend order,
steamrolls China fast enough to still be at war when the laws need flipping, then repoints
the same [navy](/guides/hoi4-navy-guide-2026)/marine build — naval dominance, a carrier
sortie-efficiency trick, amphibious **Marines** — into a "Strike South" world conquest ending
with the continental US capitulated.

<ul class="legend">
  <li><span class="badge free">free</span> costs nothing</li>
  <li><span class="badge cheap">cheap</span> small cost</li>
  <li><span class="badge setup">setup</span> needs preparation</li>
  <li><span class="badge grind">grind</span> pays off slowly</li>
  <li><span class="badge skip">skip</span> the thing to avoid</li>
</ul>

## Turn one setup

![Turn-one Production panel showing 16/16 military factories, 14/14 dockyards, and Infantry Equipment I running at 26.13/day](/media/guides/markdown/846ec806-ceda-45a9-a233-f40694c2f6f8.webp)
Turn one, before touching the focus tree, set the economy and army shape shown below. The
screenshot is the actual turn-one production panel — 16/16 military factories and 14/14
dockyards already assigned, Infantry Equipment I running at 26.13/day, a civilian train line
at 8.08/year.

<ol class="checklist">
  <li class="ch free">
    <label><input type="checkbox"><span class="body"><span class="name">Queue 7 civilian factories and 1 military factory on carrier naval bombers</span> <span class="badge free">free</span><br><span class="desc">Reaches ~35 civilian factories once tree bonuses land, per the creator.</span></span></label>
    <em><a class="jump" href="https://www.youtube.com/watch?v=xql9BHs9DbA&t=150s" target="_blank" rel="noopener">2:30 ↗</a></em>
  </li>
  <li class="ch free">
    <label><input type="checkbox"><span class="body"><span class="name">Delete the starting battleship from production</span> <span class="badge free">free</span><br><span class="desc">Not needed this early — frees factories for the infantry/navy lines instead.</span></span></label>
    <em><a class="jump" href="https://www.youtube.com/watch?v=xql9BHs9DbA&t=171s" target="_blank" rel="noopener">2:51 ↗</a></em>
  </li>
  <li class="ch setup">
    <label><input type="checkbox"><span class="body"><span class="name">Assign destroyers to the Yokosuka naval arsenal, merge fleets into one navy</span> <span class="badge setup">setup</span><br><span class="desc">Simplifies training before the tree splits your attention.</span></span></label>
    <em><a class="jump" href="https://www.youtube.com/watch?v=xql9BHs9DbA&t=191s" target="_blank" rel="noopener">3:11 ↗</a></em>
  </li>
  <li class="ch free">
    <label><input type="checkbox"><span class="body"><span class="name">Retemplate the garrison division to Chuton-chi Shidan</span> <span class="badge free">free</span><br><span class="desc">Already has support-company slots open — see the full stat block in Division templates below.</span></span></label>
    <em><a class="jump" href="https://www.youtube.com/watch?v=xql9BHs9DbA&t=212s" target="_blank" rel="noopener">3:32 ↗</a></em>
  </li>
</ol>

<div class="tipbox video"><span class="tag">In the video</span>
These factory counts and per-day output figures are never read aloud — all screen-only.
</div>

<div class="divider">═══ the doctrine system ═══</div>

## Doctrine mastery — how it actually works

Training a unit type grinds mastery for whichever doctrine family covers it. Switching your
overall family — say, away from Grand Battle Plan — **zeroes every
subdoctrine's mastery** already earned, plus costs army XP. The creator admits he'd
personally rather run **Superior Firepower**, but stays on Grand Battle Plan to avoid that reset.

<ol class="checklist">
  <li class="ch skip">
    <label><input type="checkbox"><span class="body"><span class="name">Do not switch your overall doctrine family casually</span> <span class="badge skip">skip</span><br><span class="desc">It costs army experience and wipes every subdoctrine's mastery back to zero.</span></span></label>
    <em><a class="jump" href="https://www.youtube.com/watch?v=xql9BHs9DbA&t=297s" target="_blank" rel="noopener">4:57 ↗</a></em>
  </li>
  <li class="ch setup">
    <label><input type="checkbox"><span class="body"><span class="name">Pick whichever subdoctrine already has the most reserved mastery first</span> <span class="badge setup">setup</span><br><span class="desc">It completes fastest, and its bonuses stack with what you unlock after.</span></span></label>
    <em><a class="jump" href="https://www.youtube.com/watch?v=xql9BHs9DbA&t=958s" target="_blank" rel="noopener">15:58 ↗</a></em>
  </li>
</ol>

<div class="divider">═══ focus order ═══</div>

## Focus order

The creator's own posted order (from the video description), cross-checked against the
transcript and on-screen tree. Day counts are almost never spoken aloud — only two were
caught on an open tooltip. Treat every blank cell as unstated, not zero.

<table>
<thead><tr><th>#</th><th>Focus</th><th>Days</th><th>What it unlocks</th></tr></thead>
<tbody>
<tr><td>1</td><td>Ministry of Commerce and Industry</td><td>—</td><td>Triggers the 3-way political-path event</td></tr>
<tr><td>2</td><td>Continue Takahashi Korekiyo's Policies</td><td>—</td><td>+1 civilian factory, negative consumer-goods factor</td></tr>
<tr><td>3</td><td>Purge The Kodoha Faction</td><td>—</td><td>Opens the rest of the political tree</td></tr>
<tr><td>4</td><td>The Military Ministers' Attaché System</td><td>—</td><td>Gates further progress behind an event</td></tr>
<tr><td>5</td><td>The Imperial Defense Plan</td><td>—</td><td>+10% first strike principle attack, +10% breakthrough vs. war target</td></tr>
<tr><td>6</td><td>Expand Hiratsuka Navy Ammunitions Arsenal (1st)</td><td>—</td><td>Dockyards, a naval MIO upgrade</td></tr>
<tr><td>7</td><td>Expand Kawagoe Army Arsenal</td><td>—</td><td>+2 military factories</td></tr>
<tr><td>8</td><td>Rely on Infantry Offensives</td><td>—</td><td>First army subdoctrine, -25% land doctrine cost</td></tr>
<tr><td>9</td><td>Adopt New Assault Doctrine</td><td>—</td><td>Army XP, land doctrinal research bonuses</td></tr>
<tr><td>10</td><td>Establish Showa Aircraft Industry</td><td>—</td><td>Military factories</td></tr>
<tr><td>11</td><td>The Harakiri Debate</td><td>14 (screen)</td><td>+5% base war support; removes the Collapsing Cabinet penalty</td></tr>
<tr><td>12</td><td>Konoe's First Cabinet</td><td>—</td><td>—</td></tr>
<tr><td>13</td><td>National Spiritual Mobilization Movement</td><td>—</td><td>—</td></tr>
<tr><td>14</td><td>Form the Central Economic Council</td><td>—</td><td>Opens the research-slot focus below it</td></tr>
<tr><td>15</td><td>Expand the Showa Research Association</td><td>70 (screen)</td><td>+1 research slot, +1 Aerodynamics/Avionics Facility</td></tr>
<tr><td>16</td><td>Guide the Zaibatsus</td><td>35 (screen)</td><td>+5% civ/dockyard speed &amp; output; -35 days off "Approach ___" focuses</td></tr>
<tr><td>17</td><td>Approach Yasuda</td><td>—</td><td>Yasuda Zaibatsu Bank: -20% consumer goods factor</td></tr>
<tr><td>18</td><td>Fund The Riken Institute</td><td>—</td><td>+1 research slot</td></tr>
<tr><td>19</td><td>Form the Cabinet Intelligence Bureau</td><td>—</td><td>Intel tree</td></tr>
<tr><td>20</td><td>Found The Great Japan Press Association</td><td>—</td><td>War support vs. bombing/convoys/casualties, +10% war stability, weekly stability ×180d</td></tr>
<tr><td>21</td><td>Expand Hiratsuka Navy Ammunitions Arsenal (2nd)</td><td>—</td><td>+3 dockyards, MIO upgrade</td></tr>
<tr><td>22</td><td>The State General Mobilization Law</td><td>—</td><td>Unlocks Closed Economy while non-aligned</td></tr>
<tr><td>23</td><td>Enact the Religious Organizations Law</td><td>—</td><td>—</td></tr>
<tr><td>24</td><td>New Order Movement</td><td>—</td><td>—</td></tr>
<tr><td>25</td><td>The Imperial Rule Assistance Association</td><td>—</td><td>—</td></tr>
<tr><td>26</td><td>National Defense State</td><td>—</td><td>Requires &gt;79% war support; total-mobilization-style factory factor</td></tr>
<tr><td>27</td><td>Ichioku Isshin</td><td>—</td><td>—</td></tr>
<tr><td>28</td><td>The Chrysanthemum Throne</td><td>—</td><td>Restores the Emperor — the political path's end goal</td></tr>
<tr><td>29</td><td>Mobilize the Japanese Women</td><td>—</td><td>More recruitable population</td></tr>
<tr><td>30</td><td>Form the Dai Nippon Fujinkai</td><td>—</td><td>—</td></tr>
<tr><td>31</td><td>Develop the Chinese Resources</td><td>—</td><td>Post-China-war resource exploitation</td></tr>
</tbody>
</table>

![Focus tree with The Harakiri Debate's tooltip open, showing its 14-day completion time and war-support effects](/media/guides/markdown/1d2a9876-4488-469a-b6ac-bc7eec9d2ada.webp)
One of only two focuses whose day count was visible on screen — The Harakiri Debate, 14
days, requiring the Military Ministers' Attaché System: +5% base war support and removal of
the Collapsing Cabinet penalty (−0.10 daily political power gain, −0.20% weekly stability).
Timed to fire the moment Collapsing Cabinet appears.

![Imperial Japan focus tree late-game, showing the Politics, Economy and Military branches](/media/guides/markdown/1ed0ba71-2204-40f5-a91b-cb26d5478b82.webp)
The tree late-game — the table above is the order; this is for shape.

## Political power spend order

Also from the description: political-power picks (decisions, advisor hires,
doctrine-adjacent unlocks), not tree focuses.

<table>
<thead><tr><th>#</th><th>Pick</th><th>Note</th></tr></thead>
<tbody>
<tr><td>1</td><td>Abandon Naval Treaties</td><td>Timing disputed — see comments below</td></tr>
<tr><td>2</td><td>Speed up the Hikari Debate</td><td>—</td></tr>
<tr><td>3</td><td>Army Offense Specialist</td><td>Field marshal levels 4→6 through China combat, 5%→10% division attack</td></tr>
<tr><td>4</td><td>Illusive Gentleman</td><td>Spy-related</td></tr>
<tr><td>5</td><td>Night Operations</td><td>Starts an air-XP grind</td></tr>
<tr><td>6</td><td>Naval Aviation Expert</td><td>—</td></tr>
<tr><td>7</td><td>Grand Battle Plan Expert</td><td>+15% GBP mastery gain; later un-picked to rebalance army/navy faction influence</td></tr>
<tr><td>8</td><td>Yasuda Industrial Concern</td><td>—</td></tr>
<tr><td>9</td><td>Infantry Expert</td><td>—</td></tr>
<tr><td>10</td><td>Army Logistics Expert</td><td>-8% division attrition</td></tr>
<tr><td>11</td><td>Develop Resources — Aluminum First</td><td>—</td></tr>
</tbody>
</table>

<div class="tipbox alt"><span class="tag">From the comments (not in the video)</span>
- Rush both Takahashi Korekiyo picks (security and economy) before anything else — "Takahashi is the engine." Also skip a focus right before the Harakiri Debate: it only lasts 4 days and refunds the political power. <span class="note">— @MarcAardvark</span>
</div>

<div class="divider">═══ navy and doctrines ═══ </div>

## Navy setup and the new mechanics

Assign Yamamoto (torpedo bomber + cruiser captain) to the main fleet, split a destroyer
fleet under an upgraded Koga, and form a sub fleet under a Lancer-trait admiral. Two
mechanics are new this DLC: **Naval Headquarters** (port level 8, and — hedged, not
confirmed — an urban province), and **support ships**, which the creator hasn't tested
thoroughly.

![Fuel tooltip over the world map showing current fuel, daily gain and consumption broken out by Army, Air and Navy](/media/guides/markdown/42384c5f-7712-4eb4-b648-892f34d366b0.webp)
This fuel tooltip is never read aloud: Current Fuel 126.2K against a 553.5K capacity, Daily
Gain 682/day, Current Daily Consumption 1.4K/day against a 20.4K/day maximum, split Army
193/day, Air 529/day, Navy 643/day. At this rate the stockpile empties in 6.2 months — right
where the creator says on screen the fleet has reached "equilibrium on the fuel."

![Research tab showing the Support Ships project's output stats: manpower, detection and speed](/media/guides/markdown/0fe79e1a-30f5-47a0-b61d-17b5617e1332.webp)
The Support Ships project, as it appears in the Research tab — none of this is read aloud:
Service **Manpower** 250, Surface Detection 20.0, Sub Detection 1.0, Surface Visibility 10.0,
Depth Charges 1.0, Max Speed 32.0 kn, Max Range 3,000 km, HP 25.0.

<ol class="checklist">
  <li class="ch setup">
    <label><input type="checkbox"><span class="body"><span class="name">Build a Naval Headquarters once you have port level 8</span> <span class="badge setup">setup</span><br><span class="desc">The added urban-province requirement is only "pretty sure," not confirmed.</span></span></label>
    <em><a class="jump" href="https://www.youtube.com/watch?v=xql9BHs9DbA&t=851s" target="_blank" rel="noopener">14:11 ↗</a></em>
  </li>
  <li class="ch setup">
    <label><input type="checkbox"><span class="body"><span class="name">Pick the Floating Airfields naval doctrine node</span> <span class="badge setup">setup</span><br><span class="desc">+10% sortie efficiency instantly; full unlock adds +15% carrier air attack, -20 overcrowding, -15% night penalty.</span></span></label>
    <em><a class="jump" href="https://www.youtube.com/watch?v=xql9BHs9DbA&t=1064s" target="_blank" rel="noopener">17:44 ↗</a></em>
  </li>
</ol>

<div class="tipbox alt"><span class="tag">From the comments (not in the video)</span>
- Don't abandon the Naval Treaties early like this video does — the game warns you when a ship is big enough to trigger abrogation; wait for that instead. Abandoning early lets Britain/the US start building 1-2 years sooner. <span class="note">— @Gaminggamer1602</span>
- Don't put normal secondaries on carriers — they can't use light attack. DP secondaries for AA only, if anything; dedicated AA-slot guns plus fighters do most of the work. <span class="note">— @Snailman3516</span>
</div>

<div class="divider">═══ division templates ═══</div>

## Division templates

The video never reads template stats aloud — the mobile-warfare "Ho Shidan" template the
creator describes verbally was never shown on screen at readable resolution, so only one
template's numbers can be reported here, transcribed directly from the Division Designer.

![Division Designer showing the Chuton-chi Shidan template's full combat and cost stats](/media/guides/markdown/fbf068ca-0600-4270-8536-9256279dd9eb.webp)
Chuton-chi Shidan — the [garrison-type template](/guides/hoi4-defensive-division-templates)
the creator retemplates his second-line divisions into on turn one, chosen specifically
because it already has open support-company slots.

<table>
<thead><tr><th>Template</th><th>Width</th><th>Soft attack</th><th>Breakthrough</th><th>Org</th><th>Cost (IC)</th></tr></thead>
<tbody>
<tr><td>Chuton-chi Shidan (garrison)</td><td>12</td><td>61.9</td><td>21.6</td><td>51.4</td><td>277–316</td></tr>
</tbody>
</table>

<p class="note">Also visible on the same panel: HP 150.2, defense 158.0, armor 0.0, piercing
4.4, max speed 4.0 km/h, manpower 6,300, training time 120 days. The narrated "Ho Shidan"
mobile-warfare template was never captured at readable resolution — don't assume it matches
these numbers.</p>

<div class="divider">═══ equipment designs ═══</div>

## Ship design — light cruisers via Kure Naval Arsenal

![Kure Naval Arsenal design team's trait tree and equipment bonuses in the ship designer](/media/guides/markdown/9202af63-a264-4b1e-a64c-2b2e3266dd36.webp)
Around the inter-war period the creator refits every carrier (deck space, AA, radar, guns,
armor), then reworks the light cruiser line through the **Kure Naval Arsenal** design team —
"the best MIO for your CLs and your battleships" — upgrading light attack, then heavy
attack, then light piercing/light attack again. Screen-only design-team bonuses: Research
Bonus +10%, Design Team Assign Cost 0.10/day, a flat +2/+2
[equipment bonus](/guides/hoi4-modifier-stacking-red-bubble) to all battleships and cruiser
ships. Individual weapons-tree module names aren't legible at capture resolution, so none
are invented here.

## Aircraft design — medium airframe via Aichi Kokuki

![Aircraft designer showing the Basic Medium Airframe stats beside the Aichi Kokuki range-bonus tooltip](/media/guides/markdown/f27a6971-257c-449b-bc0c-ee059e60ed95.webp)
For the medium aircraft line the creator picks **Aichi Kokuki** ("Range Focused Aircraft
Designer" in-game), narrated only as "the range MIO." Screen-only: +10% range to Basic
Medium Airframe, Basic Heavy Fighter and Basic Scout Plane, +5% research bonus, 0.10/day and
1,000 funds on completion. Basic Medium Airframe itself: 40 manpower, 990 km range, 18.0 air
defense, 325.0 km/h max speed, 80.0% reliability, 32.00 production cost, 202 days to
research.

<p class="note">No [tank designer](/guides/hoi4-meta-division-templates-and-tank-designs) appears anywhere in this video — this build is naval- and
Marine-led, so none is reported here rather than invented.</p>

<div class="divider">═══ the china war ═══</div>

## Preparing for and fighting the China war

65 days out, **Mengjiang joins the war against you**, so man the border and motorize supply
hubs near the front first. Two subdoctrines follow: Capital Ships, then Naval Gunfire
Support (reduced fuel consumption, faster refit, +25% shore bombardment). The Marco Polo
Bridge Incident triggers the declaration.

![Battle plan for Operation Yon-Ju, the multi-division advance on Beijing under Army Group 1](/media/guides/markdown/3e842d86-9eff-4ff7-a6fd-bea5b2728356.webp)
The battle plan as actually drawn on the map — "Operation Yon-Ju," 47 divisions advancing on
Beijing under Army Group 1: what "just battle-plan in fast" looks like in practice.

<ol class="checklist">
  <li class="ch setup">
    <label><input type="checkbox"><span class="body"><span class="name">Man the entire Mengjiang/Manchukuo border before the war starts</span> <span class="badge setup">setup</span><br><span class="desc">Mengjiang joins against you; everyone past that border line becomes hostile.</span></span></label>
    <em><a class="jump" href="https://www.youtube.com/watch?v=xql9BHs9DbA&t=1569s" target="_blank" rel="noopener">26:09 ↗</a></em>
  </li>
  <li class="ch skip">
    <label><input type="checkbox"><span class="body"><span class="name">Do not wait to move once war starts — go in fast</span> <span class="badge skip">skip</span><br><span class="desc">The longer you wait, the more rival Chinese factions mass troops against you.</span></span></label>
    <em><a class="jump" href="https://www.youtube.com/watch?v=xql9BHs9DbA&t=1741s" target="_blank" rel="noopener">29:01 ↗</a></em>
  </li>
  <li class="ch skip">
    <label><input type="checkbox"><span class="body"><span class="name">Switch your mobilization and economic laws before you fully capitulate China</span> <span class="badge skip">skip</span><br><span class="desc">Once China is fully capped there's no war left to justify the law change — do it while still active.</span></span></label>
    <em><a class="jump" href="https://www.youtube.com/watch?v=xql9BHs9DbA&t=1763s" target="_blank" rel="noopener">29:23 ↗</a></em>
  </li>
</ol>

<div class="tipbox alt"><span class="tag">From the comments (not in the video)</span>
- Completing "Create the Mongol military government" before the China war turns Mengjiang into your puppet instead of a combatant, skipping that front entirely — not in the video's posted order at all. <span class="note">— @sir_incognito3728</span>
- A follow-along viewer reports falling behind on infantry equipment and division counts by the China war versus the video, with no clear explanation of what differed off screen. <span class="note">— @dcsmall1</span>
</div>

<div class="divider">═══ balance of power ═══</div>

## National Defense State and faction balance

![Imperial Influence panel showing the Influential Naval Faction's production-cost and fuel penalties](/media/guides/markdown/4717817c-1ee0-4490-b47a-ced37041a052.webp)
National Defense State requires **war support over 79%**, reached via decisions (Incorporate
Imperial Way of Buddhism, Inspire Relentless Divine Nationalism). The Chrysanthemum Throne
also needs army/navy faction influence roughly equal — the creator fires his own Grand
Battle Plan Expert pick and endorses the naval faction to balance them. The real cost: an
Influential Naval Faction adds +2.5% production cost to carrier aircraft, +2.5% to
warships, and +2.5% to navy fuel consumption, never quantified in narration.

<div class="tipbox video"><span class="tag">In the video</span>
The creator notes the on-screen "Inservice Rivalry" indicator "didn't look like it did
anything" after a pick meant to shift it, and flags some of these effects may be bugged.
</div>

<div class="divider">═══ strike south ═══</div>

## Naval dominance, carriers, and the Pacific push

By this push the creator has 19 **Marines** via the right-side special forces doctrine: +6%
capacity from one focus, +24 cap from Tip of the Spear, +6 cap / +10% attack from Commando
Expert. Plan: Guam first (opens US Navy access to the Philippines), then the Philippines,
Malaya and the **[Dutch East Indies](/guides/hoi4-dutch-east-indies-independence-and-conquest-run)** together.

![Battle of Koror between Yamamoto's and Fletcher's fleets, with the 375 naval-dominance tooltip open](/media/guides/markdown/b66ac602-2b2a-4062-8254-a168d6de638e.webp)
The main engagement against the US Pacific Fleet — Yamamoto vs. Admiral Frank Jack Fletcher,
mid-battle as the "Battle of Koror." The visible tooltip states the zone requires **375
naval dominance** to count as friendly-controlled, plus weather/night modifiers never
mentioned in narration. Yamamoto dies here; command passes to another admiral.

<ol class="checklist">
  <li class="ch skip">
    <label><input type="checkbox"><span class="body"><span class="name">Never put more than 4 carriers with naval bombers in one fleet</span> <span class="badge skip">skip</span><br><span class="desc">Craters sortie efficiency; a 5th-plus carrier stocked with fighters doesn't trigger it.</span></span></label>
    <em><a class="jump" href="https://www.youtube.com/watch?v=xql9BHs9DbA&t=2216s" target="_blank" rel="noopener">36:56 ↗</a></em>
  </li>
  <li class="ch setup">
    <label><input type="checkbox"><span class="body"><span class="name">Build naval dominance in a sea zone before invading it</span> <span class="badge setup">setup</span><br><span class="desc">Dominance comes from patrolling; without it, amphibious invasions aren't possible.</span></span></label>
    <em><a class="jump" href="https://www.youtube.com/watch?v=xql9BHs9DbA&t=2278s" target="_blank" rel="noopener">37:58 ↗</a></em>
  </li>
  <li class="ch skip">
    <label><input type="checkbox"><span class="body"><span class="name">Garrison Hong Kong</span> <span class="badge skip">skip</span><br><span class="desc">Leave it open and Britain uses it to stage invasions into China — "really annoying" per the creator.</span></span></label>
    <em><a class="jump" href="https://www.youtube.com/watch?v=xql9BHs9DbA&t=2409s" target="_blank" rel="noopener">40:09 ↗</a></em>
  </li>
</ol>

<p class="note">The video states a sea zone's naval dominance going from 45 to a projected
"1,100 in 48 days" but never explains what 1,100 represents — reported as heard, not
resolved. The US destroyer-loss figures given during the fleet battle ("about 100," then
minutes later "almost 500") are both hedged by the creator as rough estimates, not a
combat-log readout.</p>

## US conquest

By the time the creator invades the continental US it's November 1942 — "a little late," he
says, since Hawaii-first ("high-castling") would have beaten detouring through Australia.
Naval bases extend to Hawaii for range, the fleet splits three ways to hold dominance in
three sea zones, and the landing goes in at Los Angeles before battle-planning the rest of
the continent.

<div class="tipbox alt"><span class="tag">From the comments (not in the video)</span>
- One commenter notes this build's Pacific push leaves out the forever-war naval-invasion slog against the UK that a full world-conquest game eventually runs into — an omission the video doesn't address. <span class="note">— @HolyKenobi</span>
</div>

<p class="note">Still unresolved from earlier notes: most focus day counts, the "Ho Shidan"
template's on-screen name, the Naval Headquarters urban-province requirement, the "1,100"
naval-dominance figure, and the destroyer-loss estimates. No patch/version number is stated.</p>

## Sources

Channel: ESG. Video: "Become Unstoppable As Japan In HOI4 - Full Guide: No Compromise, No
Surrender DLC" (49:04). Top comments were reviewed; the substantive ones are credited above.

---

## FAQ

### What is the best focus order for Japan in HOI4?

This guide follows the creator's own posted order: Ministry of Commerce and Industry into Purge The Kodoha Faction to open the tree, then a mix of army, navy and political focuses culminating in The Chrysanthemum Throne. The full 31-focus order is in the table above. Most individual focus day counts are never read aloud in the video, so treat the order as reliable and the timings as approximate unless marked screen-only.

### How does doctrine mastery work in the new HOI4 doctrine system?

Training units of a given type grinds mastery for whichever doctrine family covers that type, and switching your overall doctrine family zeroes every subdoctrine's mastery you've already earned on top of an army XP cost. The video's advice is to pick whichever subdoctrine already has the most reserved mastery first, since it finishes fastest and its bonuses stack with what comes after.

### Should you abandon the Naval Treaties early as Japan?

The video abandons them early to make bigger hulls legal sooner, but this is disputed in the comments: one high-liked reply argues the game already warns you when a ship is big enough to trigger abrogation, and waiting for that warning delays the AI's own naval buildup by 1-2 years compared to abandoning early. Both sides are reported here rather than picking one.

### How do you avoid a long war with China in this Japan build?

Man the Mengjiang/Manchukuo border before the war starts, since Mengjiang joins against you, then battle-plan in fast rather than waiting, because rival Chinese factions line up more troops the longer you delay. A top comment adds that completing the "Create the Mongol military government" focus before the war turns Mengjiang into a puppet instead of a combatant, removing that front entirely — an addition not in the video's own order.

### What division template and ship/aircraft designs does this Japan guide use?

The only division template captured with full stats is the Chuton-chi Shidan garrison template (width 12, soft attack 61.9, breakthrough 21.6, org 51.4, cost 277-316 IC); the video's narrated mobile-warfare template was never shown on screen at readable resolution. Ship design runs through the Kure Naval Arsenal MIO for light cruisers and battleships, and aircraft through the range-focused Aichi Kokuki MIO for the medium airframe line. No tank designer appears anywhere in the video.

### What is the Harakiri Debate in HOI4?

It is a focus in Japan's political tree, eleventh in the order this guide uses, and one of only two whose day count is visible on screen — 14 days. It gives +5% base war support and removes the Collapsing Cabinet penalty, so it is worth timing to fire the moment that penalty appears rather than taking it whenever it comes up. It sits behind The Military Ministers' Attaché System.

### What is Chuton-chi Shidan in HOI4?

Chuton-chi Shidan is Japan's garrison-type division template. This guide retemplates second-line divisions into it on turn one, specifically because it already has open support-company slots and needs no redesign to be useful. Transcribed from the Division Designer it runs 12 width, 61.9 soft attack, 21.6 breakthrough and 51.4 organisation, at 277–316 IC.

### How does Japan beat the USA in HOI4?

Range is the whole problem, and the fix is Hawaii. Extending naval bases out to Hawaii first — "high-castling" — beats detouring through Australia, which is the mistake this run makes and pays for by not landing on the continental US until November 1942. From there the fleet splits three ways to hold naval dominance in three sea zones, and the landing goes in at Los Angeles before battle-planning the rest.