re·con·noi·ter (US) or Brit re·con·noi·tre 
/ˌri:kəˈnoɪtɚ/ verb
re·con·noi·ters; re·con·noi·tered; re·con·noi·ter·ing /ˌri:kəˈnoɪtɚ/ verb : to go to (a place or area) in order to find out information about a military enemy : to do a reconnaissance of (a place) [+ obj] ▪ An expedition reconnoitered the coast to find out the exact location of enemy forces. [no obj] ▪ They were sent ahead to reconnoiter.
