What were the two main objectives that Canadian soldiers captured in the closing month of the Battle of the Somme?

One of the bloodiest conflicts of World War One. For more than four months the British and French armies engaged the Germans in a brutal battle of attrition on a 15-mile front. The aim was to relieve the French army fighting at Verdun and to weaken the German army.

The Canadians captured the shattered remains of Regina Trench on November 11. A week later, in the final attack of the Battle of the Somme, the Canadians took Desire Trench.

(I think) ¯\_(ツ)_/¯