In "countdown" form, the History Channel program "Ultimate WWII Weapons" (2013) reviews the 10 weapons that were crucial in deciding the outcome of World War II, as determined by experts who provide fresh analyses of the war's theaters of combat. Next, the 70th anniversary of the Allied invasion of Normandy is marked with stunning new clarity with "D-Day in HD" (2014), which provides both vivid rare footage and eyewitness accounts. In the series "WWI: The First Modern War" (2014), viewers learn how advances in death-dealing technologies made World War I historic in the annals of warfare. The program reviews how aerial bombardments, tanks, submarines, and chemical weapons were among the innovations that changed the face of battle for all time. Twenty-disc set also includes the programs "History Classics: The Color of War," "Dogfights: The Complete Series," "Patton 360," "WWII in HD," and "The World Wars." 44 hrs. total. Widescreen (Enhanced); Soundtrack: English Dolby Digital stereo; Subtitles: English (SDH).