formation (of aircraft, ships, etc.)
Refers to an organized group of aircraft, ships, or sometimes vehicles moving together in a coordinated arrangement. Common in military and aviation contexts.
戦闘機が編隊を組んで飛行している。
Fighter jets are flying in formation.
艦隊は編隊を整えて進んだ。
The fleet advanced in an orderly formation.
formation flying; formation flight
Compound of 編 (へん, 'compile, organize') and 隊 (たい, 'group, corps'). The combination straightforwardly yields 'organized group' or 'formation'.