The AI in the release version was often criticized for its recklessness and poor unit management. Version 1.1 implemented significant "tweaks" to rectify this:
A new system allowed fleets to merge even if they were in different locations; the merging fleet would automatically travel to the target. Hearts of Iron IV: Field Marshal Edition [v 1.1...
Units would only advance if they had overwhelming superiority and would not push into exposed positions. The AI in the release version was often
The naval AI was updated to deploy more of its fleet rather than keeping it in port, improving the challenge in the Atlantic and Pacific theaters. 3. User Interface and Quality of Life Hearts of Iron IV: Field Marshal Edition [v 1.1...