Flight Sergeant James McKinley Hargreaves received Royal Aero Club Aviator's Certificate 1887 on a Maurice Farman biplane at British Flying School, Le Crotoy, France on 13 October 1915. He was a Vickers Gunbus observer with 11 Squadron and scored five victories flying with Lionel Rees in the latter half of 1915.
Great Britain, Royal Aero Club Aviators' Certificates, 1910-1950
Distinguished Conduct Medal (DCM)
1232 Flight-Serjeant J. Hargreaves, No. 11
Squadron, Royal Flying Corps.
For conspicuous gallantry and skill on
several occasions, notably the following: —
On 21st September, 1915, when in a
machine armed with one machine-gun and
piloted by Captain Rees, a large German
Biplane armed with two machine-guns was
sighted 2,000 feet below. Our machine
spiralled down and engaged the enemy, who,
being faster, manoeuvred to get broadside on and then opened fire. The attack, however, was pressed, and the engine of the enemy's biplane was apparently struck, for after a quick turn it glided down some distance and then fell just inside the German lines. On 31st August Captain Rees, with Flight-Serjeant
Hargreaves, fought a powerful German
machine for three-quarters of an hour. They then returned for more ammunition and went out again to the attack. Finally the enemy's machine was brought down apparently wrecked.