Keep teching your infantry techs. It has an overproportional influence to the combat power of your army.

Most armies fundamentally rely on their infantry divisions and your own army does so too.










Attacking on mountaineous terrain with tanks is a waste due to the -70% attack modifier.
There are several huge negative attack modifiers which come into play regarding the terrain.

If you attack on mountaineous terrain with Mountaineers, you will get less mali. But if you have one Artillery brigade attached to it, you will get the full malus.

Check your "Simplified Terrain Mapmode" on the bottom right when planning the attack on your neighbor.

A comprehensive overview can be found here:
http://www.paradoxian.org/hoi3wiki/Terrain





Support brigades give your infantry punching power for less manpower. Early in the war artillery brigades should be favored. Later on mix in some anti-tank brigades.




Self-explaining title.




Build your divisions to make the most out of the province frontages and therefore you have more punching power in each battle.





















Every unit has its own width. Every province frontage is usually 10 units wide. There is this special rule that if in a fight you only use 9 width, the next unit can enter fighting zone, even if it is bigger than the remaining frontage. In example you are using 9 width right now, the province frontage allows 10, therefore the next unit (width 5) is able to enter combat and the units in battle have now a total of 14 width.

Support units do not have combat-width.



***This guide was made for an easier start into the game without having to read the complete manual. Swiss quality since 2003. 3.3.2014, ck