Make sure you're up to speed with all the latest changes as of the most recent patch.īefore going about weaving the grand strategies that will fuel your world-dominating/liberating campaign, it’s essential to master the cogs in your war-machine. Luckily for you, that's where we come in! Now you have a handy guide to aid you in navigating the choppy organisational waters of the (second) war to end all wars. Hearts of Iron 4 can be unapologetically brutal to new wargamers, due to the sheer number of systems involved – especially with numerous DLC and patches adding extra complexity to the already-sophisticated systems in the base game. And – as any hardened Hearts of Iron veteran will tell you – one of the most fundamental, crucial challenges to get your head around is optimising HoI4 division templates.