He later studied in Montreal under William Brymner , then , in March 1916 , joined the army .
As a child , Pilot assisted Cullen in his studio , and the two would take sketching trips together .
Cullen later studied in Montreal under William Brymner , then , in March 1916 , joined the army .
As a child , Pilot assisted Cullen in his studio , and the two would take sketching trips together .