Hi George:
Air units with a range of 3 may be strategically redeployed anywhere on the map (it is assumed, with a 3 month time period, that these planes could re-base anywhere on the map). Air units with a range of 2 and ground units can only be strategically redeployed by rail.
On the movement phase, if these units are on a territory with a rail line in it that connects to 2+ factory territories in your home country, they may be removed on a chit that would enable them to move. See rule 6.2 and 6.2.1.
On the non-combat movement phase, these units are placed back on the board in a territory with a rail line in it that can trace back to 2+ factory territories in your home country. See 20.6.1.
Therefore, as the German player, you could take units off the board on the movement phase from a territory in France during the movement phase and then place them back on the board in a territory in Southern Italy on the non-combat movement phase. The following turn, on the movement phase, an Italian transport could pick those units up, and take them to a territory in North Africa and drop them off. You can not rail a unit from Europe to North Africa as any rail line in North Africa does not connect to Italian or German factory territories.
Transporting units with Transports:
In your scenario below, it would depend if the Norwegian territory is occupied or not. If it is unoccupied, the German units would just land immediately. If it is occupied and there would be a battle, they would have to wait to land until the combat phase. If British naval units moved into the sea zone they are in, the naval battle would need to be resolved first (all four round) before the ground battle could take place. See 7.5.6:
7.5.6 When a transport moves to an unoccupied sea zone and drops cargo off in a friendly or unoccupied enemy territory, the cargo is disembarked immediately (prior to the next movement chit or the air movement phase). If the land territory is enemy occupied or the sea zone is occupied by enemy naval units, the cargo on the transports must wait until the conclusion of the naval combat phase (and all enemy surface combat naval units have been destroyed, returned or retreated) before disembarking their cargo.
Does this help?