Speculator misses cues from task force (6)

I believe the answer is:

patrol

I'm a little stuck... Click here to teach me more about this clue!

'force' is the definition.
(I know that patrol is a type of detachment)

I don't understand the rest of the clue.

(Other definitions for patrol that I've seen before include "Small group of Guides/Scouts" , "military unit" , "Scouting expedition" , "Reconnaissance unit" , "Unit of a Boy Scout group" .)

I've seen this clue in The Irish Times.

Want a hint initially instead of a full solution? Install my app