On the 24th July 1916, this officer was taken prisoner, together with Captain W.M.Clarke, Lt. J.A.Caldwell and 2nd Lt. N.H. Craston, I presume in respect of an attack at Guillemont.
Interestingly, whilst Leresche was a POW until the end of hostilities, his brother officers were interned in neutral countries. In the case of Captain Clarke, he was interned in Switzerland on the 19th December 1916, whilst Caldwell and Craston were interned in Holland, both on the 15th June 1918. PhilipG.