noun
advance party; advance team
A group sent ahead of a main body, often in military, expedition, or organizational contexts.
先発隊が目的地に到着した。
The advance party arrived at the destination.
先発隊は安全なルートを確保する役割を担
The advance team is responsible for securing a safe route.
Compound of 先発 (せんぱつ, 'departing first') and 隊 (たい, 'group, corps').