Ludwig August Theodor Beck was a German general and Chief of the German General Staff during the early years of the Nazi regime in Germany before World War II. Although Beck never became a member of the Nazi Party, in the early 1930s he supported Adolf Hitler's forceful denunciation of the Treaty of Versailles and the need to re-arm, although he believed Germany needed more time to rearm before starting a war.

The German General Staff, originally the Prussian General Staff and officially the Great General Staff, was a full-time body at the head of the Prussian Army and later, the German Army, responsible for the continuous study of all aspects of war, and for drawing up and reviewing plans for mobilization or campaign. It existed unofficially from 1806, and was formally established by law in 1814, the first general staff in existence. It was distinguished by the formal selection of its officers by intelligence and proven merit rather than patronage or wealth, and by the exhaustive and rigorously structured training which its staff officers undertook.