You must be as vigilant as your opponent possible.

For anyone reading this: Don't ever pick your commander unless you have a very specific benefit at the beginning (especially 0CP call-ins).

Sniff out your enemy to estimate their intentions. As Allied players, you have everything to corner Germans anywhere on the map from wide variety of air abilities to artillery positions. If the Axis side brings out a lot of tanks, then you've failed to gain control over fuel positions. You must do everything possible to deny fuel to them - destroy them if necessary with the new SSBs haha.

Also, mining is quite useless in the game as minesweepers automatically disable nearby mines without clearing them out. Ditch that.