Franz Halder (30 June 1884 – 2 April 1972) was a German General and the chief of the Army General Staff from 1938 until September, 1942. An officer on the General Staff during World War I, Halder remained there during the interwar period, rising through the ranks, and achieving a reputation as a skilled military planner, eventuall becoming Chief of the Army Staff. While Halder did present plans to Adolf Hitler for a possible invasion of Czechoslovakia in September, 1938, Halder became convinced that such an invasion would lead to an utterly disasterous war for Germany. Thus, Halder became the point man for a conspiracy to overthrow Hitler should the invasion go forward. Instead, the Munich Conference insured that there would be no war, and a coup was never needed.
Halder was aware of a vague plan to overthrow Hitler in November 1939, but made it clear he wanted no part of it. Halder served as Chief of the Army Staff until 1942, when his clashes with Hitler over the war against the Soviet Union led to Halder's dismissal. While Halder had no part of the 20 July Plot, he was nonetheless arrested, and held until Germany surrendered the following year. He was tranferred to the custody of the Allies, and held until 1947.
He worked as an historian in the 1950s, and played a role in the redevelopment of the German army.
When war broke out in October, 1938, a conspiracy led in part by Franz Halder sought to overthrow Adolf Hitler. The plot, however, was quickly detected by the German government, and the conspirators were either killed or arrested and transferred to Dachau. The German government took great care to insure that the plot was kept out of the press. Even as late as January, 1939, the full details of the scheme were unknown to many Germans.
Subsequent investigations by the SS led to the "discovery" of more plotters, particularly those who'd associated with Halder in the past.