As Earl matured his weight increased and he was forced abandon his career as a flat jockey and rode for several years in National Hunt events before retiring from the saddle in his late twenties.
With many racecourses used by the military or considered dangerous due to their proximity to major population centres, races were either cancelled or moved away from their traditional venues.
[2] In the following year Earl trained the filly Herringbone to win two classics, taking the New 1000 Guineas at the Newmarket July course in spring before defeating Straight Deal and Nasrullah in the New St Leger at the same venue in autumn.
[3] In 1944 Earl secured a fourth wartime classic when the filly Garden Path (a full-sister to Watling Street) defeated male opposition to win the 2000 Guineas.
[6] 1946 saw racing return to pre-war conditions and Earl trained Gulf Stream to finish second in The Derby before winning the Eclipse Stakes.