1920 in Canadian football 1920 in Canadian football CIRFU and IRFU adopted a four-yard Interference rule while the CRU opted for three yards of Interference. ARFU played games with 12 players per side and introduced the snap-back. The reduction in the number of players was done for monetary reasons as train rates were high after World War I. The CRU would make the same changes in 1921. The MRFU champion Winnipeg Victorias were unable to field a full team for the WCRFU finals and withdrew from competition. The MRFU wanted to substitute the second place University of Manitoba Varsity team but the SRFU refused
1942 in Canadian football 1942 in Canadian football The WIFU and the IRFU suspended operations for the duration of World War II. With the WIFU operations suspended, the Winnipeg Blue Bombers created their own league in Winnipeg. The league consisted of the Bombers (civilian team), the RACF Flyers (service team) and the University of Manitoba Bisons (students). For the western playoffs, the Winnipeg Blue Bombers combined players from all three Winnipeg City League teams and formed the Winnipeg RCAF Bombers. In addition to forming a stronger team, the combined team format ensured that Winnipeg would have a team available for the Grey Cup if