The German Spring Offensive, also called the Ludendorff Offensive after its commander, was the last major German advance of the First World War (1914-18). From March to July 1918, Ludendorff launched five major attacks on the Western Front to break the deadlock of trench warfare. The Allied resistance, use of tanks, and massive reserves, along with German logistical failures, meant that the offensives, despite each starting well, eventually petered out. The German Army, which lost 800,000 men in the Spring Offensive, simply could not compete with the combined Allied forces, which now included US divisions.
This is a companion discussion topic for the original content at https://www.worldhistory.org/article/2898/german-spring-offensive/.