When US soldiers/sailors/airmen/marines/etc. are deployed overseas, they are clearly subject to US military law, which includes a criminal code. Are there civil and family provisions in this code if the serviceperson wants to sue another serviceperson civilly for damages, wants a divorce, etc.? Do overseas military bases have local civil codes with typical causes of action, e.g. a codified “Code of Rammstein Air Force Base” with legal causes of action for breach of contract, divorce, name change, personal injury, eviction, etc., and its own case law regarding alimony allotment? What about military dependents? If Mrs. Smith is living with her husband Corporal Smith who is deployed in Okinawa and she decides she wants a divorce, can she sue under any form of US federal, state, or territorial law or does she have to brave the Japanese legal system and get a local divorce and hope that it is respected at home? What happens if Ensign Jones is on an aircraft carrier en route from Hawaii to the Philippines and he wants to legally change his name? Can he file a request with the Captain or otherwise proceed with a recognized legal cause of action under US law or does he have to wait until the ship docks and then request a name change under Philippine law or else wait until he is fully back in the US?
What about US foreign service workers and their dependents? What about the militaries of other countries? For example, if a soldier of the Canadian Forces is stationed at a US NORAD installation and wants to sue another Canadian Forces soldier that is stationed there for not paying for all the poutine that he asked the first soldier to help him import, can he proceed under any form of Canadian Law?