The Menin Gate, officially the Menin Gate Memorial to the Missing, is a war memorial in Ypres, Belgium, dedicated to the British and Commonwealth soldiers who were killed in the Ypres Salient of World War I and whose graves are unknown. The memorial is located at the eastern exit of the town and marks the starting point for one of the main roads that led Allied soldiers to the front line.

The 177th Tunnelling Company was one of the tunnelling companies of the Royal Engineers created by the British Army during World War I. The tunnelling units were occupied in offensive and defensive mining involving the placing and maintaining of mines under enemy lines, as well as other underground work such as the construction of deep dugouts for troop accommodation, the digging of subways, saps, cable trenches and underground chambers for signals and medical services.