IIRC He was driving a Jeep with supplies. It was a night scene and he had a few lines.
He said filming it he couldn't drive the manual transmission in the Jeep so they just had some guys push it. The thing is he forgot to put in neutral lol.
Yup. He's in the scene right as Easy Co arrives at Bastogne.
.55 into this clip
https://www.youtube.com/watch?v=Uq5qRy-ErWA