I still don't understand why the US troops stopped right there, some miles from the German border. Were they sent to CZ just to save the German soldiers from Russkies?
Probably a Big Three agreement as to where all the converging armies would stop so they would not start shooting at each other.
The only way to Prague for USA soldiers was to first cross several hundred miles of Germany, or else north from Austria, which was a German ally.
Hitler killed himself the last day of April, so these films were taken within days or weeks of the collapse of the German Army.