Hans von Seeckt
In 1920, the head of the Hans von Seeckt clandestinely re-established the General Staff, by expanding the "Truppenamt" (Troop Office); purportedly a human resources section of the army. In March, German troops entered the Rhineland under the guise of attempting to quell possible unrest by communists and in doing so violated the demilitarized zone. In response, French troops advanced further into Germany until the German troops withdrew.