In May 1937, Beck refused an order to draw up orders for executing "Fall Otto" (Case Otto), the German plan for an invasion of Austria, under the grounds that such a move might cause a world war before Germany was ready. During the "Anschluss" of February–March 1938, once Beck was convinced that no war would result from a move against Austria, he swiftly drew up the orders for "Fall Otto". In Beck's conception of power politics, war was a necessary part of restoring Germany to a great power if the wars were limited and if Germany possessed enough strength and had allies that were sufficiently strong.