Both military tabs are similar; Army  & Navy

1- Overview of units. split per Army or navy and stated in which area they are

2- Costs per Army

3- Use this to create new armies from existing ones

4- Transfer units between armies (note: both armies must be in the same area at the start of the turn

5- Here you can move your armies. Click on the Phase 1 button and all available areas to which you can move are available. Make sure not to exceed the number of movements your army can make. 

Only if your Army-HQ is in an area with a train-station, it can board a cargo train if enough cargo trains are available.

Selecting YES will board the Complete HQ (with all units attached). It is not possible to only have a part of an HQ board.

When deleting movement orders from the previous turn make sure to actually DELETE the input. Do NOT replace it with 0 (zero)!