If only half of this is true, it's a scathing indictment of General Eisenhower and those who allowed and helped him carry out his Rhine Meadows death camps against German POW's and others.
The problem with such revelations is that they often come from people with a Nazi bent, people who are truly anti-Jew, who are truly racist supremacists. That alone is often enough to cause many people to steer clear or to completely discount the facts.
I don't know how many things claimed in the video are exactly true. I more than suspect that it is true that prisoners were deliberately left to die when help was readily available. That's a war crime.