At Langley Field, VA, the squadron engaged in aerial observation work with the Coast Artillery School until April 1942.
22.
The village is probably the site of a Medieval settlement, indicated by aerial observations showing crofts, buildings and sunken lanes.
23.
With pressure building during the first day of the attack, aerial observation reported a strong regimental size element moving towards Bannstein.
24.
In addition to the pilot training, the 2d AIC eventually developed specialist schools in Aerial Observation, Radio, Photography and Aerial Gunnery.
25.
In early 1918, with World War I raging, he returned to Princeton to teach military aerial observation in its aviation ground school.
26.
With the advent of aerial observation, the reforestation of logged-over land, and better fire prevention and control, the towers eventually became obsolete.
27.
This camouflage was considered most effective for gunnery engagements with surface units or shore batteries in areas where aerial observation was unlikely.
28.
Camouflage was used in defensive works by German engineers, as were burying or part burying structures to escape aerial observation and attack.
29.
During World War I, Kingman Douglass served as a pilot with the 91st Aero Squadron, engaged in aerial observation and photographic intelligence.
30.
Reassigned to Mexican Border in 1927 as an aerial observation squadron at Brooks Field, San Antonio, Texas before inactivation on 1 August 1927.
