KP Naval Construction Battalion RN Royal Navy Seabees USN United States Navy argosy armada army army group battalion battery battle group brigade cadre coast guard cohort column combat command combat team company corps detachment detail division escadrille field army field train file fleet flotilla flying column garrison kitchen police legion maniple marine merchant fleet merchant marine merchant navy mosquito fleet naval forces naval militia naval reserve navy organization outfit phalanx platoon posse rank regiment section squad squadron tactical unit task group train troop unit wing