Author: Kim Kaufmann Publisher: Exploros License: CC BY-SA Credits: WWI trenches (Scene 1): By Royal Engineers No 1 Printing Company, Wikimedia Commons, Public Domain; British tanks (Scene 2): By Bundesarchiv, Bild 183-R27012, Wikimedia Commons, CC BY-SA 3.0 de; Adolph Hitler (Scene 3): By Bundesarchiv, Bild 183-H1216-0500-002, Wikimedia Commons, CC BY-SA 3.0 de; U.S. bomber (Scene 3): By Unknown - NARA FILE #: 208-YE-7, Wikimedia Commons, Public Domain; Auschwitz (Scene 4): By Bundesarchiv, Bild 183-N0827-318, Wikimedia Commons, CC BY-SA 3.0 de; Anne Frank (Scene 4): By Unknown photographer; Collectie Anne Frank Stichting Amsterdam, Wikimedia Commons, Public Domain