1917

Doolittle, James Harold
Joined Army.

Apr, 24 United States Signal Corps,
Maj. William Mitchell became the first American officer to fly over enemy lines in France.

May, 20 The first German submarine to be sunk by an aircraft

Aug, 02 Cdr. E. H. Dunning, flying a Sopwith Pup, made the first underway landing of an aeroplane on a ship.

Oct, 16 United States Signal Corps,
Final tested of airborne wireless set. In experiments, ranges of up to 25 miles were acheived for air-to-air communications and 45 miles for air-to-ground communications.

Oct, 18 United States Signal Corps,
The Aviation Medical Research Board was established by the Signal Corps.

1917
	Doolittle, James Harold	Joined Army.
Apr, 24	United States Signal Corps,	Maj. William Mitchell became the first American officer to fly over enemy lines in France.
May, 20		The first German submarine to be sunk by an aircraft
Aug, 02		Cdr. E. H. Dunning, flying a Sopwith Pup, made the first underway landing of an aeroplane on a ship.
Oct, 16	United States Signal Corps,	Final tested of airborne wireless set. In experiments, ranges of up to 25 miles were acheived for air-to-air communications and 45 miles for air-to-ground communications.
Oct, 18	United States Signal Corps,	The Aviation Medical Research Board was established by the Signal Corps.