クルト・フォン・シュライヒャー
Having obtained his "Abitur" degree in 1911, Erwin Planck pursued a career as an officer in the German Army. In World War I, he soon found himself a prisoner of the French forces in 1914. Planck returned to Germany in 1917 and was active on the General Staff. Here he first met Major Kurt von Schleicher, the beginning of a lifelong friendship.