Band of Brothers people

Either:

The game makers thought that they should employ actors with experience in the WWII genre

OR

Band of Brothers and COD2 are linked in some way, a contract maybe. I'm only guessing though...

The actors from Band of Brother went trough some language courses, so they have the same accents from the american soldiers from that era, pluss they where good with military lingo

I heard that they wanted someone who sounded like James Madio, so they asked him to do the game, and then he got many of his Band of Brothers co-stars whom he was friends with to do it too.