How did Sabaton react when they ran into authentic Nazi Christmas ornaments? They laughed, of course. Inside the grand halls of the Royal Museum of the Armed Forces and Military History in Brussels, Belgium, relics from World War One and World War Two tell the story of our planet’s greatest conflicts. We recently toured the museum with Sabaton to discuss their new album, The War to End All Wars, and the biggest surprise was encased at the very top floor. Believe it or not, in the 1930s, Germans hung ornaments of Hitler’s head on their Christmas trees. They also celebrated...