sentences:  But in September 1937 Dance joined the RAF, and (due to hearing loss) was assigned to the Royal Observer Corps in East Anglia, where his business skills must have helped organise the mostly-volunteer staff.The war extended what was to be a temporary service into nine years, a period in which his opportunity to listen to black American bands was curtailed, due to both limited leave and the effects of rationing on record-production.He certainly missed the start of Bebop, which developed during the war and a recording-musicians' strike in the US.