Definition of "air reconnaissance" []

• Reconnaissance either by visual observation from the air or through the use of airborne sensors (noun)

WordNet. Princeton University. 2010.

• "Nobody could be quite sure how the enemy had located A and Z, but the CO of 1 RCHA was convinced that it was the result of enemy air reconnaissance and sound ranging, not flash-spotting, and was not in the least impressed with the current rumour of reporting by spies."
• "Scheer had restricted wireless to an absolute minimum, sharply limiting Room 40’s ability to provide useful information, and a dense fog over the entire North Sea restricted air reconnaissance by zeppelins."
• "After some rather dilatory measures to confirm this, chiefly by means of air reconnaissance (which was itself becoming increasingly difficult in the deteriorating winter weather), Paulus went to army group headquarters at Starobelsk with a report which grossly underestimated the strength of the Russian concentration."