Originally used in military contexts for strategic planning and gathering intelligence on the enemy. The platoon was tasked to reconnoitre the ridge before dawn.
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Beyond 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.
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Connotation of Stealth
Implies a cautious approach to avoid detection, often done secretly or inconspicuously. She went to reconnoitre the venue before the event.