Verdun, The Somme, Jutland, on the land and sea 1916 was the year of offensives. Both sides tried to break the stalemate on the Western Front. One of the relics of that time is the British Webley revolver holster shown below. the revolver is from 1918, but the holster is from 1916. Was it at the Somme? it's anyone's guess.
Note the date and broad arrow mark in the middle of the flap.