noun
advance party; advance team; vanguard unit
A group sent ahead of a main force to prepare, scout, or secure an area. Used in military, expedition, and organizational contexts.
先遣隊が無事に目的地に到着した。
The advance party arrived safely at the destination.
救助のため、先遣隊が被災
An advance team headed to the disaster area for rescue.
本隊 is the main body or main force, contrasting with the advance party 先遣隊.
Compound of 先遣 (senken, 'sending ahead') + 隊 (tai, 'group, corps'). The term is used in modern Japanese for advance teams in military and civilian contexts.