Pearson was promoted to 2nd lieutenant (temporarily) in October 1917.

He was assigned to No.
23 Squadron RFC at Bertangles, which originally operated Spads.
They later re-equipped with Sopwith Dolphins, and Pearson began to score confirmed victories of enemy aircraft.
Between 30 May and 1 November 1918, he destroyed six enemy planes (one of which was a joint victory with Harry Compton) and drove six others down out of control.
Pearson was promoted to 2nd lieutenant (temporarily) in October 1917.
He was assigned to No. 23 Squadron RFC at Bertangles, which originally operated Spads. They later re-equipped with Sopwith Dolphins, and Pearson began to score confirmed victories of enemy aircraft. Between 30 May and 1 November 1918, he destroyed six enemy planes (one of which was a joint victory with Harry Compton) and drove six others down out of control.
James William Pearson