The Collaborative International Dictionary
off-base
off-base \off-base\ adj. (Mil.) located outside a military base; as, off-base housing.
Douglas Harper's Etymology Dictionary
Wiktionary
off-base
a. (alternative form of off base English)
WordNet
off-base
adj. located outside a military base; "off-base housing"
Usage examples of "off-base".
He was enrolled in a big high school off-base, somewhere in New Jersey, somewhere near Fort Dix.
If you wanted to make an off-base or longdistance call, you had to find a pay station and feed it coins.
They'd both made plans to stay off-base, so why should the corporal be stuck camping there if he didn't have to be?