# Hearts of Iron IV Thunder at our Gates | Patch Notes (1.19.0) - Product: Hearts of Iron IV (https://whatsnew.fyi/product/hearts-of-iron-iv) - Vendor: Paradox Development Studio - Date: 2026-06-10 - Original notes: https://store.steampowered.com/news/app/394360/view/712277443918955865 - Permalink: https://whatsnew.fyi/product/hearts-of-iron-iv/releases/2026-06-10-thunder-at-our-gates-patch-notes-1.19.0 What's New is an index, not a publisher: every entry below links to the vendor's own release notes, which are the authoritative source. Entries are labelled where they are hand-curated sample data, pre-releases, or drawn from a secondary source such as a developer blog. Reuse: the summaries, labels and curation here are © What's New. Quote freely with attribution and a link back; wholesale republication of the corpus is not permitted — terms: https://whatsnew.fyi/terms. The vendors' own release notes remain their publishers'. --- - **added** — New Focus tree for Australia with a new Democratic Election system - **added** — New Focus tree for Siam - **added** — New Focus tree for The Dutch East-Indies - **added** — New voice-over for Australia, Siam, and The Dutch East-Indies - **added** — 6 new music tracks - **added** — 50 new and revamped airplane models - **added** — 4 new and revamped ground vehicle models - **added** — 21 new and revamped tank models - **added** — 3 new infantry models - **added** — 14 Army HQ commander models including 3 generic cultural variants - **added** — Army HQs system allowing deployment of generals into the field to provide additional support to their army - **added** — Ability to assign deployed Army HQs to specific orders to buff troops - **added** — 11 unique HQ support companies for tailoring Army HQs to different needs - **added** — 5 new commander abilities unlocked through HQ support companies - **added** — Dispersed Operations doctrine focusing on hardening logistics and reducing enemy air power effects - **added** — Ship Captains for naval vessels with the ability to grant them medals and promote them to Admirals - **added** — 8 Historical Ship Captains in both bookmarks for all Major countries and Australia - **added** — New row for Regimental Support in the Division Designer - **added** — 12 Regimental support companies unlocked through techs and synergising with the doctrine system Generals! Tomorrow at **18:00 CEST** we’ll be releasing **_Thunder at our Gates_**. It feels like only two months ago that we brought you Peace for our Time. Accompanying this release we’ll bring you **Patch 1.19.0** and, just like the recent Anniversary Patch, it’s another beefy one. ##### **Patch Notes (1.19.0)** ##### Thunder at our Gates - Added new Focus tree for Australia and a new Democratic Election system. - Added new Focus tree for Siam. - Added new Focus tree for The Dutch East-Indies. - Updated states in South-East Asia. - Added new VO for Australia, Siam, and The Dutch East-Indies. - Added 6 new Music Tracks. - Added 50 new and revamped airplane models - Added 4 new and revamped ground vehicle models. - Added 21 new and revamped tank models. - Added 3 new infantry models. - Added 14 Army HQ commander models including 3 generic cultural variants. - Introducing Army HQs which allows for the deployment of generals into the field to provide additional support to their army. - Deployed Army HQs can be assigned to specific orders and buff troops accordingly. - Added 11 unique HQ support companies that allows for tailoring Army HQs to different needs. - Added 5 new commander abilities that are unlocked through HQ support companies. - Added Dispersed Operations doctrine for Thunder at our Gates, focusing on hardening logistics & reduce the effect of enemy air power. - Added Ship Captains to Naval vessels and the ability to grant them medals and promote them to become Admirals. - Added 8 Historical Ship Captains in both bookmarks for all Major countries (and Australia!). ##### **Free Features & Models** - Added a new row for Regimental Support to the Division Designer. - Added 12 Regimental support companies that are unlocked through techs and synergise with the doctrine system - Added the new Doctrine system for Special Forces. - Added 3 revamped Infantry models, and 2 Artillery models for the Commonwealth - Added 2 revamped tank models. - Added 4 revamped ground vehicle models. - New Zealand received several new Focuses, Advisors and Industrial Concerns. ##### **Balance** - The Pearl Harbor raid now has a lower base success chance, but it is improved by taking the focus 'Form the Kido Butai'. - Command powers daily costs now scale with amount of battalions affected. - The negative effects of failing the 'People's Trust' mission as the PRC are now better displayed in the tooltip, and have been merged into one National Spirit. - Split the Japanese Home Islands airzone into Northern, Central, and Southern Japan. - Manchukuo: Improved the trait the leader gains when completing the focus 'Claim the Mandate of Heaven'. - The UK is now less likely to select a faction rule that reduces the tension needed to guarantee other nations when playing on historical. - Commercial Nuclear Reactor will now contribute 0.01% Daily Breakthrough towards 'Physics/Nuclear' category. (As it already contributed to the production of the Nuclear Bombs, it will now also be listed in the respective tooltip). - Iran no longer gains redundant research bonuses when going down the Negotiate with America / Establish the Iranian Nuclear Program focuses, instead getting breakthrough points. - Rejigged the Mexican AI strategy plans so that they build up and prepare more before they eventually go to war with the USA and the Allies. - Supervised States can now decline being called into a war, to represent the difference between regular puppets and democratized governments. - Continuous Offensives: All armour additionally gains +10% breakthrough. - Self-Sufficient Battalion: Armored signal battalion_mult on tank destroyers nerfed: AP attack reduced from +20% to +10%. - Artillery Groups: Support artillery now also benefits, gaining +5% soft attack and +10% breakthrough. - Pakfront: Anti-tank brigade +20% defense moved to Emplacement Rotation & +20% soft attack moved to Weakpoint Studies - Multirole Support Vehicles: M _[Truncated at 4000 characters — full notes: https://store.steampowered.com/news/app/394360/view/712277443918955865]_