I have enjoyed the history channel for years...
And generally, they get things mostly right. However, what they get wrong, they often get really wrong.
Military history (especially WWII), and firearms have been a hobby of mine for the past 40+ years, and while I have no "official" standing, I will match my accumulated knowledge against most of the "experts" and not come off tooo badly.
The History channel gets things right about 90% of the time, (exclusive of the film footage) but, when they get things wrong, sometimes its really wrong! Even the Gunny (R. Lee Ermy) in his new show Lock N Load, has been making errors in regard to firearms history. I'll cut him a little slack, as the Gunny is getting up there in years, doesn't write the scripts, and while fairly knowledgeable, isn't a firearms expert. IN his latest series, he seems to be doing it more for fun, than for "accuracy".
I also cut the shows some slack with their historical footage, as for many subjects, footage of the correct subjects is simply non existant. However, I do agree that they have been getting more and more careless recently. Nothing quite like being told about the fighting in the snows of the Ardennes during the Battle of the Bulge, and seeing German light tanks blitzkrieging across the summer fields of France.