I am trying to determine which engineer battalion would have been with the 85th Regiment, 3rd Battalion... I think I've correctly narrowed it to either the 126th or the 310th but I'm stuck for further details. This is for novel research (again and still!), but I am looking for accuracy. My character has been at Mount Belvedere (Jan-Feb 1945) and should be in the group that moves closest to Modena in April 1945. I appreciate any clarification anyone can offer. Thank you!