With the exception of Ftr/Tac, you can basically bet that in a single round each unit cannot be used more than once to move itself or anything else.
In example, the Italians could land their 2 Ftr on a German Carrier on Turn X. On German Turn X+1, Germany could move that carrier 3 spaces from a NB, and then the Italian’s Turn X+1 could fly those ftr 4 more spaces, effectively moving their ftr 7 spaces in a single round.
You could take it to a further extreme and fly ftr from Japan to the SZ off of DNG and land on a CV there. The US could sink that CV with just subs, and those ftr could fly 4 more spaces (effectively 9 total spaces) to land on New South Wales or even Burma if you wanted them to.
Its a bit gamey, but it does work.