Answer: USOS

AnswerCrossword Clue
USOSService orgs.
USOSWWII entertainment centers
USOSClub for GIs
USOSMil. clubs
USOSG.I.'s hangout
USOSG.I.'s oases
USOSService centers for G.I.'s
USOSServicemen's clubs
USOSTroop entertainment units
USOSG.I. orgs.
USOSCenters for G.I.'s
USOSService org. branches
USOSService-club units
USOSService clubs
USOSHangouts for GIs
USOSOff-post clubs.
USOSWhere G.I.'s get together.
USOSWhere G. I.'s congregate.
USOSRecreation spots for G.I.'s.
USOSServicemen's clubs.
USOSHospitality centers.
USOSRecreation centers for G. I.'s.
USOSTroupes entertaining troops.
USOSPlaces for PFCs
USOSGIs' hangouts
USOSWWII dance halls
USOSGI hangouts