@Kjakan:
Thanks krieg, two more questions:
During an amphibious assault, you can’t retreat land units back on the transports (if I remember correctly). But can you still retreat planes (leaving the land units behind)?
If you combine an amphibious assault with a normal attack on the same territory, can you then retreat all land units to the territory the normal attack came from?
during an amphibious assault, after the first round of combat, and then after any subsequent round of combat afterwards, you are allowed to retreat air units and land units that were NOT offloaded from a transport, to any space that land units move through or from to attack the space.
Any unit that offloaded from a transport CANNOT retreat and will fight to victory or die on the beaches.