@AMIGOOFD:
When you buy units, do you get to use them at that turn, or do you have to wait to place them at the end to use them. My friend argues you can use them right away after purchase.
The turn sequence is “Buy units, combat move, combat, non-combat move, deploy your purchased units”. And then the next nation move does the same and so on.
So you can’t use them to attack, and the only way you can use them in your current turn is carriers as landing space for planes.