The Hindenburg Line was a German defensive position during World War I, established in 1917. It was named after German General Paul von Hindenburg and consisted of a series of fortifications, trenches, and bunkers designed to protect German forces from Allied attacks. The line stretched across northern France and was strategically important for the German military. In 1918, the Allies launched a series of offensives to break through the Hindenburg Line. Despite its strong defenses, the line was eventually breached during the Hundred Days Offensive, leading to significant German losses and contributing to the end of the war.