Great little video clip.
Now that the jump has been made to post the sentries at the memorial, I hope it continues year-round. It really adds to the whole experience of visiting the memorial. Very classy.
I've seen the American changing of the sentry at their Tomb of the Unknown Soldier at Arlington, and always thought it was something we could/should do. I distinctly remember the first time I saw the American ceremony. There were only the three soldiers on parade, the oncoming and outgoing sentry and the Sergeant. It was announced previously that during the ceremony it is requested that all spectators stand and remain standing until the old sentry was relieved. Everyone was busy watching the Sergeant inspecting the uniform and weapon of the oncoming sentry that they stopped paying attention to the current sentry, who continued marching/halting/about turn/marching halting/about turn, in front of the Tomb. We forgot him, until we heard a crisp halt, and the sentry yell in a clipped tone (with strong southern accent) "YOU!!!! It was requested that you remain standing during the ceremony, and TAKE OFF that hat !!!!!" The object of his wrath was a teenager who made the mistake of getting bored and sitting/leaning his bum against a railing. You could see the fear in his eyes. He jumped up, and take swept his hat off. While the rest of us checked to make sure we weren't starting to slouch.
Seeing those scarlet tunics doing something similar at the Memorial and tomb of our unknown soldier, does my heart proud.