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.
Snowbirds
No. 431 Squadron formed on 11 November 1942, at RAF Burn (in North Yorkshire), flying Wellington B.X medium bombers with No. 4 Group RAF Bomber Command. The squadron moved to RAF Tholthorpe in mid-1943 as part of the move to bring all RCAF squadrons into one operational group – No. 6 Group RCAF – and converted to Halifax B.V four-engined heavy bombers. In December 1943 the squadron moved to RAF Croft where it was re-equipped with Halifax III's and later, Lancaster B.X aircraft. 
The squadron moved to RCAF Station Dartmouth, Nova Scotia after the war, disbanding there on 5 September 1945.No. 431 (Fighter) Squadron re-formed at RCAF Station Bagotville on 18 January 1954, using the new Canadair F-86 Sabre. The squadron was formed on a temporary basis until there were enough new CF-100s available to fulfill RCAF squadron needs. No. 431's duties included aerial combat training and displaying the capabilities of jet operations to the public at air shows, the largest being "Operation Prairie Pacific": a 50-minute exhibition that travelled to selected locations across western Canada. The team consisted of four Sabres and a solo aircraft. This was the first Sabre team to be authorized to perform formation aerobatics in Canada. The unit was disbanded on 1 October 1954.