A firing line. It can be a squad or an element depending on the service branch.
A detachment is a part of a unit that is geographically removed from its home/mother unit - eg Det 3, 42nd BN, where Det 3 is located overseas and the majority of the 42nd is in Texas.
― Tom Millar (Millar), Tuesday, 14 January 2003 00:59 (twenty-two years ago)