Source: February 1916 War Diary taken on strength.
Lieutenant Douglas Northcombe of D Company led his party of bombers down Cowdray Trench to its junction with Contract Trench where he met the raiding party of the 21st Battalion. Earlier, his party had found a large supply of German stick grenades in a bombing post and where are armed and thrown into the dugouts along the sides of Cowdray Trench.
Antal, S., & Shackleton, K. (2006). Hill 70: A Canadian-Style Attack. InDuty nobly done: The official history of the Essex and Kent Scottish Regiment(1st ed., p. 235). Windsor, ON: Walkerville Pub.
War Diary of the 18th Battalion CEF 