Answer: fallin

AnswerCrossword Clue
FALLIN

Drill sergeant's order

FALLIN

Parade command

FALLIN

Boot-camp command

FALLIN
Drill sergeant's command
FALLIN
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FALLINArmy command.
FALLINCorporal's command.
FALLINN.C.O.'s order
FALLINSergeant's order
FALLIN.... with: become acquainted
FALLINCommand!