What I like to do is unload usa on Normandy. UK goes right after and loads up on USA transports, then it offloads a counter attack the next round wherever USA brings the boats.
A: 12
B: 11
A: 10
B: ok you get it, I get axis and you get allies at 10.
Going up
A: 8
B: OK, I take it at 8.
The difference with going up is you bid for what the other person will get as the allies. When you go down it is for what you want to take the allies with.
I believe about turn 7. Do keep in mind that of the 5 playing, I think only 2 of us have played A&A before and was years ago. So you cant follow too many textbook “should haves” as far as this goes. :-D