He was definitely making the chocolate, as records show billions of the bars were produced between 1939 and 1945. But the troops weren’t exactly loving them. This was the intent, of course, but having to carry whatever they needed to fight in the field, a disgusting “chocolate” bar wasn’t going to top the list. Most troops would ditch the D-Ration for a decent kind of ration or, better yet, more ammunition.
When they did take the bars with them, they found them almost inedible. Soldiers with poor teeth couldn’t chew them and those with good teeth had to whittle slices off the bar to consume. Those who tried to eat the chocolate bars began calling them “Hitler’s Secret Weapon” because it absolutely wrecked their intestines – a situation today’s U.S. troops often refer to as “bubbleguts.”