The Battle of Passchendaele, also known as the Third Battle of Ypres, took place during World War I from July to November 1917. It was fought between the Allied Forces, primarily British and Canadian troops, and the German Army. The battle aimed to capture the ridges around the town of Passchendaele in Belgium to improve the Allies' position and disrupt German supply lines. The battle is infamous for its horrific conditions, including heavy rain that turned the battlefield into a quagmire. Despite significant casualties on both sides, the Allies advanced only a few miles, capturing Passchendaele in November 1917. The battle exemplified the brutal nature of trench warfare during the war.