reconnoitre
verb [ I or T ] military specialized UK (US reconnoiter) uk/ˌrek.əˈnɔɪ.tər/ us/ˌriː.kəˈnɔɪ.t̬ɚ/
（士兵或军用飞机）侦察，搜索（情报）
(of soldiers or military aircraft) to get information about an area or the size and position of enemy forces
Synonym: scout