"they had a crack outfit but everyone else had tanks. a little late there"
Only the Germans had the Panzer fist at that time. Had they attacked US in 1939, you'd be lying flat in a matter of three months ;)
And don't forget that Germans were using cavalry in 1939 too.
"when telling jokes the word is definitely Polack"
Is it? I didn't know that. I'm a Pole from motherland, so I'm allergic to the word "Pollack" in American mouth. You know, we all here have an inferiority complex. :)
I stand corrected. The point is though that cavalry against tanks doesn't work too well.
Fortunately for the US the floating tank hadn't been invented yet.