"One of the Craters at St. Eloi". It was here that the 29th (Vancouver) Battalion, CEF were engaged in heavy fighting, April 1916". Note: This photo was taken in April / May 1919, well after the fighting of 1916. There is a wooden cross in the foreground. [DND Photo o.4484] The Battle of the St. Eloi Craters was the first major engagement for the 2nd Canadian Division, recently arrived from England. It ended in disaster. Mud-filled Craters and Little Cover: British forces had previously blown a series of underground mines to destroy the sector’s German defences, but the effort had left massive, mud-filled craters for the attackers to occupy. When the Canadians relieved British troops on the night of 3 April, 1916 they found few actual trenches in which to take cover, and most of those were waist-deep in water. The entire front was also under observation and incessant fire from the Germans. A series of German counterattacks on 6 April, 1916 drove the Canadians out of the muddy craters and sewed confusion throughout the division and at higher headquarters. Through two weeks of hard fighting, Canadian commanders were often unclear as to the location of their troops. Most soldiers dug in under heavy fire and divided by the shell-pocked terrain, could supply their commanders with little accurate information on the progress of the battle. After aerial photography helped reveal the true German and Canadian positions, the battle ground to a halt on 16 April, 1916 with enemy forces holding most of the key points. The Canadians suffered 1,373 casualties during the confused fighting at St. Eloi. The Corps commander, Lieutenant-General E.A.H. Alderson, was replaced by Sir Julian Byng, an experienced and respected British general.