1940 - 1950: Wartime & Wembley
1940-41: Bradford beat Dewsbury 15-5 in the Yorkshire Cup final. Their try scorers are 
Trevor Foster (2) and Walter Best, and the goal kicker George Carmichael (3).
Also in 1941, Rugby League is banned in France during the German occupation in World War 2 (game re-established in 1946)
1941-2: Bradford are the Championship runners up, but win the Yorkshire Cup final against Halifax 24-0. The try scorers are Davies (2), Best, Carter, Foster and Smith, with goals by Ward (2) and Carmichael.
1943-4: Bradford win a two leg Challenge Cup final against Wigan 8-0 on aggregate.
1944-5: Bradford reach the two legged Challenge Cup final again but this time lose to Huddersfield 13-9 on aggregate. However they do win a two leg Yorkshire Cup final against Keighley 10-7 on aggregate. The try scorers are Trevor Foster and Ernest Ward (pictured top right), and the goal kickers James and Darlison.
1945-46: Bradford win the Yorkshire Cup 5-2 against Wakefield Trinity, their try being scored by Frank Whitcombe (pictured left) and converted by George Carmichael.
1946-7: Bradford beat Leeds 8-4 in the Challenge Cup final at Wembley. Bradford's tries are scored by Trevor Foster and Emlyn Walters and converted by Ernest Ward. Willie Davies won the Lance Todd Trophy as Man of the Match.
1947-8: Bradford go to Wembley again but lose the Challenge Cup to Wigan 8-3. 
Bradford's solitary try is scored by, Edwards, although the Lance Todd Trophy is won by Frank Whitcombe. This is the first Rugby League match ever attended by the reigning monarch, HRH King George VI, who presents the trophy. Bradford are also the Championship runners up.
1948 Northern's first foreign tour travelling to France playing two matches before returning home.
1948-9: In their third consecutive Challenge Cup final Bradford beat Halifax 12-0 in front of 95,050 fans. Trevor Foster and Eric Batten (pictured bottom right) are the try scorers, while Ernest Ward kicked three goals and won the Lance Todd Trophy. They also win the Yorkshire Cup against Castleford 18-9. The try scorers in that match are Foster, Leake and Edwards(2), who also kicked 3 goals.
1949-50: Bradford win the Yorkshire Cup against Huddersfield 11-4, with a try by Davies and 4 goals by Ernest Ward.
1950 Joe Phillips and Jack MaClean sign from New Zealand. Phillips later becomes club leading point scorer and key member of the clubs reformation 1964. MaClean becomes record try scorer.