Loic,
Michael Brodhead found a few items at the Office of History in Alexandria, and will share the information as soon as possible. Many thanks to Michael!
I will post it here when it becomes available. 
Just got Michael's reply:
Classification: UNCLASSIFIEDCaveats: NONE
Dear Marion,
Attached are pages from Alfred Beck, et al., with information on the 234th
Engineer Combat Battalion.
The Order of Battle volume had this:
The battalion was activated 7 April 1943 at Camp Rucker, Alabama (formed out
of the 2nd Battalion of the 336th Engineer Regiment); sailed from the New
York Port of Embarkation 21 August 1943; landed in England 4 September 1943;
landed in France 7 June 1944; participated in the Central Europe, Normandy,
Northern France, and Rhineland campaigns; at Sommesous, France at the end of
the war (August 1945); landed at the New York Port of Embarkation 26 November
1945; inactivated 26 November 1945 at Camp Shanks, New York.
I wish I could have found more information. The James T. Controvich
bibliography of unit histories lists a History of the 234th Engineer Combat
Battalion, by Thomas V. Duggan, a copy of which is at the Military History
Institute.
It's good to know that people in Europe are honoring our soldiers. Today I
sent copies of general orders to a Dutch organization that reenacts the WWII
exploits of the 17th Armored Engineer Battalion. I've been in correspondence
with them for the past few years. The general orders awarded distinguished
unit citations to the 17th.
-----Original Message-----
From: Michael.J.Brodhead
Sent: Wednesday, June 22, 2011 3:59 PM
To: Brodhead, Michael J HQ02
Subject: Scanned Document
Please see the attached document.
Proud Daughter of Walter (Monday) Poniedzialek
540th Engineer Combat Regiment, 2833rd Bn, H&S Co, 4th Platoon
There's "No Bridge Too Far"