Answer:

REUPS

Answer	Crossword Clue
REUPS	Enlists anew
REUPS	Signs for another tour
REUPS	Signs on again

REUPS	Opts for another hitch
REUPS	Signs on for another tour
REUPS	Does another stint
REUPS	Extends one's enlistment
REUPS	Enlists again
REUPS	Signs on for another stint
REUPS	Stays on for another stint
REUPS	Signs on again: Army slang.

REUPS	Signs on for another term
REUPS	Commits to another hitch
REUPS	Stays for another hitch
REUPS	Opts not to be discharged
REUPS	Returns to service
REUPS	Avoids a service interruption
REUPS	Goes in for another hitch
REUPS	Extends a tour

REUPS	Avoids a service break?