As early as June 1940, before the armistice with France had been signed, General Heinz Guderian also argued for seizing Britain's strategically important naval base of Gibraltar. Guderian even urged Hitler to postpone the armistice so that he could rush on through Spain with two Panzer divisions, take Gibraltar, and then invade French North Africa. General Alfred Jodl, Chief of Staff of Oberkommando der Wehrmacht (OKW) operations, presented Hitler with a formal plan to cut off Britain from its eastern empire by invading Spain, Gibraltar, North Africa, and the Suez Canal instead of invading the British Isles.