In basic A & A, you must unload all troops from a TR on the same territory, & once the troops are offloaded, the TRs movement ends. You CAN p/u troops from different locations (say load one INF in Phillipines, move TR to Okinawa, load another INF at Okinawa, move to Sea Of Japan SZ, unload both INF in Manchuria), but they all must be unloaded on the same territory (in the example, the 2 INF could be unloaded on either Manchuria or Japan Home Islands but not one on each).
In any case where a unit is involved in combat on Combat Phase, that unit’s move ends & it may not move again on Non-Combat Movement. The only exceptions are FTRs & BMRs which may fly out on Combat Move, be part of a battle in Combat, then fly back on Non-Combat Movement.
It’s possible I’m wrong about the landing of units on 2 land territories adjacent to the same body of water as the TR, but if I am, the rule is logical, & intuitive & I would recommend using it anyway…
Ozone27