Where were the main battles on the western front?

The three battles of Ypres (1914, 1915 and 1917, the latter also known as the Battle of Passchendaele). The two battles of the Somme (1916 and 1918). The Battle of Verdun (1916).

These were the three largest, although there were also smaller battles such as Belleau Wood and Chateau-Thierry by the Americans when they finally entered the war. Broodseinde, which the New Zealanders attacked just eight days before they were massacred in an attempt on Passchendaele. Vimy Ridge, where "Canada became a nation". Bapaume etc.