No. 428 Squadron RCAF
No. 428 Squadron RCAF was the ninth long-range heavy bomber Article XV squadron formed overseas during the Second World War at RAF Dalton in Yorkshire, England on November 7, 1942. The squadron was initially assigned to No. 4 Group RAF. With the creation of No. 6 Group RCAF, the squadron was reallocated on January 1, 1943 operating with it until April 25, 1945.
No. 3 Squadron RCAF
No. 3 (Bomber) Squadron was formed on 1 September 1935 at the RCAF main training base in Trenton, Ontario, under the control of RCAF headquarters. Along with Nos. 2 and 6 Squadrons, It was authorized to be formed with two flights for purely military purposes during Fiscal Year 1936/1937. The squadron was to include a Fighter Flight with the Armstrong Whitworth Siskin Mark IIIA and a Bomber Flight with the Westland Wapiti. Only the former was formed on 1 September from the pre-existing Fighter Flight formed in 1930 as the Wapitis had yet to arrive from England. Due to a shortage of aircraft and personnel, the squadron included only one flight on 15 April 1936. It expanded to two flights under the command of Squadron Leader A.H. Hull on 13 July; the Bomber Flight was to include the nucleus of No. 6 Squadron. On 10 August it was combined into a four-flight composite squadron under the command of Hull with No. 2 Squadron due to the shortages, with C Flight from the Bomber Flight with the No. 6 Squadron nucleus and D Flight from the Fighter Flight; A and B Flights were from No. 2. After No. 6 Squadron was activated on 1 December 1936, No. 3 Squadron again became a separate unit under the temporary command of Flight Lieutenant B.G. Carr-Harris on 7 April 1937.