Lieutenant General (retired) Mark Hertling served for 38 years in the US Army as a tanker and cavalryman, serving at every level from tank platoon leader on the East-West German border to Commander of the 7th Army. He retired in December 2012, after serving as the Commanding General of US Army, Europe (USAREUR), where he led over 60,000 soldiers and partnered with the Armies of 51 nations.