I checked with duckai. The answer from that source was roughly 250,000 Americans died in the European Theater.
German losses were estimated about 4,400,000 to 5,300,000
The German loses would likely also include those killed by the Soviets, which would likely be over half the amount listed above. Then the Brits and other forces likely took out a considerable quantity.
Regardless, it was a staggering loss of life. I’ve read/heard that the finest army in the world at that time was the German Army. Their biggest problem was their lunatic boss, Hitler, who tried to micromanage the war. Hitler was in essence a great ally in the defeat of his own forces.
He believed his own sycophants, who said he was a strategic genius. There is a lesson in that for all leaders.
Numbers seem low for Germans more around 8 million but regardless I think the early German army was very professional and effective, like all wars as it dragged on and losses mounted quality would decline naturally
Much of the early German successes were from this quality and tactics, don’t forget P tabs, but much of it was incompetence of French, English and Soviets.
French alone had more tanks and aircraft than Germany charB and Matilda were good tanks, but used as infantry suppprt weapons and spread out made them less effective
Interesting story where on one occasion where they massed some tanks and attacked Rommels flank, they were only stopped by using 88s perhaps for the first time in AT role. Story goes that rommel basically over inflated the attack and that lead to GS ordering halt to Dunkirk over flank worries 🤔
IMO one of the biggest mistakes made by Germans during war