Reconnoitre
/ˌrekəˈnɔɪtər,ˌriːkəˈnɔɪtər/
Definition 1 of 1
Pro Tip 1/3Military Origin
Originally used in military contexts for strategic planning and gathering intelligence on the enemy. 
The platoon was tasked to reconnoitre the ridge before dawn.
Pro Tip 2/3Beyond Warfare
Now also refers to exploring or examining an area for any purpose, not only military. 
The architects were sent to reconnoitre the city's historic district.
Pro Tip 3/3Connotation of Stealth
Implies a cautious approach to avoid detection, often done secretly or inconspicuously. 
She went to reconnoitre the venue before the event.