A study of the use of US weapons and equipment by infantry in the Korean War This was produced through interviews of US soldiers after their time in combat in Korea, and was meant to help determine the usefulness of different items of equipment. The most interesting part to me was about the amount of aimed vs un-aimed rifle fire in combat.
Animated Normandy Map. Original WW2 situation maps of the Normandy landing from June 6, 1944 to August 4, 1944.
Some noteworthy things to watch is the early consolidation of the beachheads, the shrinking German pocket in the Cotentin Peninsula in the north west corner of the map, and the sudden accelleration of the advance starting around June 26.
Animated Battle of the Bulge Map. Original WW2 situation maps of the German Ardennes Offensive, aka Battle of the Bulge Dec 15 1944 - Feb 16, 1945
Points of interest include the fact that the US was unaware of the presence of the German units prior to the attack. You can see when Bastogne becomes completely cutoff on Dec 25 and 26, and the resupply corridor is opened on December 27. The high point of the German advance around January 1st, and by the second week of February, the front lines are essentially in the same place as they started on Dec 15th.