An Austrian military officer stands outside of Hofburg palace during a commemoration ceremony on the occasion of the 80th anniversary of Austria's annexation to Germany, the so-called "Anschluss", in Vienna, Austria, on March 12, 2018. Eighty years after Adolf Hitler proclaimed Austria's annexation -- or "Anschluss" -- the country is remembering its wartime past with a 24-hour multimedia project starting Sunday to retrace the key moments of the Nazi takeover. / AFP PHOTO / JOE KLAMAR (Photo credit should read JOE KLAMAR/AFP via Getty Images)