No. 428 Squadron RCAF
On 7 Nov 1942, he assumed command of No 428 (RCAF) Squadron, standing up the squadron in No. 4 Group. As the OC, it was noted that "Wing Commander Earle was a grand chap, one who can genuinely be called, 'One of Nature's Gentlemen'. He was well liked by the Canadians and sadly missed when he left on promotion to group captain in February 1943. He flew two operations from Dalton, occupying the astro-dome. He had previously been flying Fairey Gordons in the Middle East (Iraq), and found the Wellington difficult, partly due to his eyesight not liking the English skies, and partly as he was not a tall man." After only three months, he left 428 Bomber Squadron (RCAF) as an acting group captain on 7 Feb 1943, when he was assigned as the station commander of RAF Ridgewell and then RAF West Wickham, late in 1943, then as a temporary group captain. He ended the war as Air Officer Commanding No. 300 Group RAF (RAF Transport Command) in Australia.
No. 411 Squadron RCAF
The squadron was formed on 16 June 1941 at RAF Digby in Lincolnshire, England as an Article XV squadron under the control of the British Royal Air Force. The squadron was equipped with the Supermarine Spitfire and after a period of training the squadron began operations in August 1941 with the Spitfire VB variant. Part of the Hornchurch Wing it operated over continental Europe on Rhubarb sorties and as bomber escorts. After some rest periods the squadron joined the Kenley Wing for more operations over Europe.