The clarification provided on this video is important. Please don’t skip it.

(The image shows the Tomb of the Unknown Soldier from World War I. In front of it (from left to right) are unknown soldiers from the Korean War, the Vietnam War, and World War II. Below the calendar video is another video that is well worth your time.)

BELOW:

At about 2:00, there is a focus on the World War I memorial. Following is a clear view of the entire memorial. (No narration, just quiet, respect, dedication, and training. Inspection and changing of sentinels come at about 4:00. Numerous sites explain the selection of unknowns and the rigorous requirements and training of the sentinels.)