In July 1943 Knowles took part in the recovery of the body of Free Polish Commander General Władysław Sikorski , after his aircraft crashed off Gibraltar . Later his unit operated in Italy , clearing mines and obstacles , including mines from the Bridge of Sighs in Venice . Knowles left the Navy in 1950 , and worked as a self-employed haulier
his aircraft crashed off Gibraltar
1943 Gibraltar B-24 crash
Sydney Knowles