Complex sentence: The Toronto RCAF Hurricanes was a member of the Ontario Rugby Football Union and was formed during World War Two (after several teams disbanded for the war) with football players who had joined the Royal Canadian Air Force.
Split into simpler sentences: The Toronto RCAF Hurricanes was a member of the Ontario Rugby Football Union and was formed during the Second World War after several teams disbanded for the war. The team was composed of football players who had joined the Royal Canadian Air Force.