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. 548 Squadron RAF
The squadron was formed at Lawnton, near Brisbane, Queensland, Australia on 15 December 1943 to provide air defence duties with Spitfires, as the RAAF Kittyhawks were inadequate for interception missions. It was first formed under the command of Dave Glaser. The first months were spent training with Wirraways and de Havilland Tiger Moths, but in April 1944 the squadrons Spitfire's arrived. The squadron was made up of RAF Aircrew and RAAF Groundstaff. On 15 June 1944 the squadron moved initially to Livingstone Airfield and Strauss Airfield in the Northern Territory of Australia. The squadron was then relocated in October 1944 to Parap Airfield in Darwin, Northern Territory.