during the war, constantine continued his cricket career as a league professional; also, as a popular player who could boost crowd attendances, he appeared in many wartime charity games. however, the war ended his career in top-class cricket and signalled a change in his life's priorities. remaining in nelson when the war started, he initially served as an air raid precautions equipment officer, and as a billeting officer for incoming evacuees. after applying for a job with the ministry of labour, constantine was offered a senior position as welfare officer by the ministry of labour and national service.