Source - Passchendaele (2008 Film) The Battle of Passchendaele, also known as the Third Battle of Ypres, was fought from July to November 1917 during World War I. Launched by British and Allied forces under Field Marshal Douglas Haig, the goal was to break through German lines, capture the village of Passchendaele, and reach the Belgian coast to disrupt German submarine bases. The battle became infamous for its horrific muddy conditions, relentless artillery bombardments, and staggering casualti