i am not sure what you mean by "federal soverignty," if you mean jurisdiction, I am pretty sure they are fully under military law and crimes are tried under their tribunals. As for civil law, i think those living on the base are domicilaries of the state where they "came from" or possibly the state where the base is... depending.maybe that is not the question you are asking at all. you are posting in the students and grads board, so now that i think about it, you probably have had civpro and so what i said probably wasnt an answer you were looking for... eh...hs.
you mean real property-- like land?there is a difference in terms of ownership and jurisdiction, i mean the bases in state X probably couldn't say "we are no longer part of state X we are now our own state" but in terms of jurisdiction over criminal matters they are probably free from state jurisdiction (and under military law) unless a civilian is involved... hmmm, there must be some military historians out there.... come out come out....the military is so not my thing, so i admit all ignorance... sorry gruber.