I read all of them too, and had a bunch. You dont see them around any more.
The author may or may not have had combat experience on the Russian front...not that it matters. But the little things seemed authentic. The books are a genre of their own, sort of like Spaghetti westerns are to normal westerns....
The book that was the quintessential Sven Hassel book to me, was Blitzfreeze.
I believe the first book which was mostly about being in a labour camp/penal battalion was based on the author's actual experiences, the rest were fiction. (I dont think anyone would really believe that the Germans armed penal battalions with tiger tanks and sent them to fight the Russians...)
Bookmarks