Received this during the holidays! 
My father was Tech Sergeant Herschel Buck. I was watching the history channel today and they had on he crossing of the Rhine river. I dug out my dad's Bronze Star and was reading a news clipping that my mother had enclosed with it. It said my Dad operated a 5 ton Northwestern pile driver and drove bridge pilings and helped construct the first fixed bridge across the Rhine ten days ahead of time. That was from March 29, 1945 to April 8, 1945. He enlisted April 16, 1942 went overseas July 1, 1942 and served in England, Africa, Sicily, Germany, and France. I wish I knew more but he never talked much and he passed in 1988. I found your site while doing a quick search and thought I would pass this along. I don't know if anyone who served with my Dad's regiment is still around. If you know of anyone please pass this on.
Sincerely,
Francis Buck
Proud Daughter of Walter (Monday) Poniedzialek
540th Engineer Combat Regiment, 2833rd Bn, H&S Co, 4th Platoon
There's "No Bridge Too Far"