Position, as troops (6)
I believe the answer is:
deploy
'position as troops' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for deploy that I've seen before include "Bring into use" , "Move (troops) into field" , "Bring into action sustematically, say troops" , "redistribute in one area" , "Put into action" .)