First, does anyone else think it's crazy that DC Comics would deliver a movie about a humble soldier on-screen faster than the Green Lantern or Wonder Woman? When I think of must-see DC properties, Sgt. Rock doesn't come to mind -- but that might just be me.
And if you're unfamiliar with Sgt. Rock, Wikipedia has his long and glorious WWII history. The short answer is that he is the WW2 soldier to end all soldiers, having fought in every campaign there was. Depending on who you talk to, he either died in the war or lived on to perform covert operations for the United States.
A movie adaptation has been in the works since the late '80s, when Arnold Schwarzenegger was in talks to play the heroic infantryman, but it has sputtered out time and time again. Last year, John Cox was hired to write a screenplay and IGN reported that the movie would get the 300 treatment. Bear in mind, that was April 2007 when every producer of every film was trying to give them a 300 treatment.
Ritchie would be an interesting choice for a comic book property. He's not unfamiliar with the territory, with The Gamekeepers under his belt. It would be cool to see him adapt an existing character and storyline, and a WWII storyline at that. Shake him up a bit. I hesitate to really go, "Oh, yes, awesome!!" because, frankly, everything hinges on RocknRolla for me. (Incidentally, the Silver interview contains no small amount of praise for it. Please let it be true, because I want to believe that Russian mafia + Gerard Butler will be all I dream of.) So count me in the neutral category, which seems to be rare when it comes to Ritchie. Please rectify that by choosing a side for me, dear readers.