Army Groups Guide
No Army Group? Start one!
Army Groups (AGs) full? Create another!
The Ideal Base AG mix is:
Base Tank Group (Infantry / SH)
Artillery Group (Howitzer / RL)
Field Fight Group (MB / Heli / L Tank / Infantry)
But feel free to mix it up if you can't get exactly this combo! Mixed groups give great results.
For example, a Mixed Base Destroyer Group (Infantry / MB / RL) mows down distant bases quickly.
Just remember to give your group a clear, descriptive purpose in the name and select your desired units carefully!
Optimizing Tactics!
If you go into the research center and select the tactics tab you can edit them to benefit your desired style. The important distinction here is the Command tab applies to when YOU are leading an army group while the Coordination tab only applies to when you send your unit to someone else's army group.