Robert Bourdillon left
Oxford University on 2 August 1914. He was commissioned as a
Second Lieutenant in the
Intelligence Corps on 6 August 1914. In early 1917, Bourdillon trained further as a pilot and gained his "
wings". On 11 April 1917, he joined
27 Squadron, which used
Martinsyde Elephants. On 2 May 1917, he was hospitalised. On his return, he was promoted from
Flying Officer to
Flight Commander. On 27 July 1917, Bourdillon led five aircraft from
27 Squadron to attack the German
Zeppelin sheds located at
Berchem-Sainte-Agathe. He left the squadron on 28 August 1917 and joined the
RFC Home Establishment. On 26 September 1917, he was awarded the
Military Cross. On 21 September 1917, he was promoted to
Staff Officer, 2nd Grade. Then on 1 February 1918, he was appointed
chief experimental officer. By the end of World War I, Bourdillon was a
Captain and was awarded the
Air Force Cross in the 1 January 1918 King's
Birthday Honours List for his work on bombsight development. ==Later career==