I believe the History Channel is owned by Disney, so take that for what it's worth.
Two things:
1) It may sound far fetched but what if those shooting the live ammo knew they were shooting live ammo and it was deliberate? Can someone tell me if this is at all likely? (from sources other than the history channel :) ) Have looked up Slapton on the web and mostly only find reference to the German attack.
2) Someone earlier compared the war on terrorism with WWII and the respective KIA numbers. Think the link is tenuous, WWII was an old style war where you knew the borders and your enemy was a country not a free moving unknown group. Its not like all Iraqi citizens are the enemy and its not like the war on Iraq led to the liberation of the people from an occupier - it led to the occupation of that country.