That is because they wanted to fight to protect the Socialist Motherland, Stalin's USSR, not the USA.
the usa is becoming a contender.
Hammett fought in WWI as well. There’s something different about your Commie in the USA today, I tell you.
Take for discussion a POS like that Manning fellow in the news no so long ago. Wore a uniform, hated the US through and through. Can’t say that about Hammett, you just can’t. Well, you could, but you’d be wrong.