1) Ad-hoc committee 2) English hip hop group 3) Group with a mission 4) Kind of committee 
Any combination or single resources assembled for a particular tactical need, with common communications and a leader. A Task Force may be pre-established and sent to an incident, or formed at an incident.
(from the article `military unit`) ...turn form a flotilla, several of which in turn form a fleet. For operations, however, many navies organize their vessels into task units (3–5 ...
A group of people formed to work on a particular project or assignment
Any combination or single resources assembled for a particular tactical need, with common communications and a leader. A Task Force may be pre-established and sent to an incident, or formed at an incident.
[n] - a semipermanent unit created to carry out a continuing task 2. [n] - a temporary military unit formed to accomplish a particular objective
noun a temporary military unit formed to accomplish a particular objective