Edgar was killed in battle, leading his battalion over the top by kicking a rugby ball into no man's land on 29 July 1917 attacking a machine gun post and his body was never found.
Morreu tristemente en batalla, liderando o seu batallón á fronte tras patear unha pelota de rugby dentro da zona libre de homes o 29 de xullo de 1917, polo ataque dunha metralladora, o seu corpo nunca foi atopado.