Dear Mary:
Was able to find out a few more clues for you. Please check out these web links. I've also included a contact for the unit too. Later I will scan some history from one of my engineer books. There are several paragraphs regarding your brother's unit.
Sincerely,
Marion
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297th Engineer © Battalion
Mr. Joseph C. Rufo
12 Springer Avenue
Yonkers, NY 10704-1510
(914) 237-4875
http://www.armyengineer.com/Vet_news.htm
http://capefearww2.uncwil.edu/voices/091bio.html
http://www.jeroenkoppes.com/ww2/units/7th%...0US%20Corps.htm
http://www.usace.army.mil/inet/usace-docs/...-1-42/c-7-5.pdf
http://www.wartimememories.co.uk/allied/usarmy/
http://www.3ad.org/wwii/wwii_order_of_battle.htm
http://home.scarlet.be/~ping2445/Belgium_U...SA_WW2_03.shtml
Proud Daughter of Walter (Monday) Poniedzialek
540th Engineer Combat Regiment, 2833rd Bn, H&S Co, 4th Platoon
There's "No Bridge Too Far"