@snpic
In Global 1940 you can, provided the units involved comply to the NCM-rules and you unload the unit into a friendly territory.
From the rules, Pacific 2nd, page 22:
“Transports can move to friendly coastal territories and load or offload cargo, unless they loaded, moved, offloaded, or were involved in combat during the Combat Move or Conduct Combat phase.”
and page 32:
"A transport can load cargo in friendly sea zones before, during, and after it moves. A transport can pick up cargo, move 1 sea zone, pick up more cargo, move 1 more sea zone, and offload the cargo at the end of its movement. "