A Joint Task Force is a "joint" (multi-service) ad hoc military formation. The task force concept originated with the United States Navy in the 1920s and 1930s.
Ships of Task Group 100.1 during Exercise BALTOPS, 1985
Military organization (AE) or military organisation (BE) is the structuring of the armed forces of a state so as to offer such military capability as a national defense policy may require. Formal military organization tends to use hierarchical forms.
A mixed aircraft and ship formation of military vehicles during an exercise with USN and JASDF vehicles.