to remove a soldier from a vehicle use the command
('unitname'D setpos 'position where you would like him to be teleported to)
example:
soldierxD setpos getmarkerpos "exile" (set up an empty marker as a beacon for a teleportation destination"). What is in quotes is the marker name. If you want to kill him, put the marker over water.
That D after soldierx means the driver of that vehicle
For gunner, I believe it is G (soldierxG), for cargo, I am not sure off the top of my head.
To move in the German soldier, use the following command (I am assuming right now he is the gunner)
'germansoldierx' moveingunner 'flak 36 name'