Talk about timing. I just moved a foot locker full of my dad's Army files to my attic today. I came across a copy of a two volume work he had titled "Engineer History Mediterranean Theater Fifth Army" On the back cover is "Printed for Engineer Section Headquarters Fifth Army, Druckerei-Kamapanie 9507". Both volumes are marked "Confidential" but it is marked out with pencil. These have been in our family as long as I can remember.
Volume One covers Africa, Salerno and Naples, Volturno to May 11th, Anzio Beach head and May 11th to the Arno. Each volume has a section on the tactical situation, work at Engineer Headquarters and Unit Operations and list many of the units I see represented in this forum (531st Eng Shore Rgt, 540th Eng. Cbt Rgt (- Co.F) which was attached to the 82D ABN, 10th Eng Cbt Bn, 16th Armored Eng Bn for example)
Volume Two covers The Arno through the winter static phase, the Po campaign and Lessons Learned in teh Italian Campaign.
There was a Third volume which is titled Appencices but I have not come across that yet and doubt I have it.
I thought I would surf the net once again to see if there was any info on the 175th Engineers since I am compiling info for a family history and I came across this forum with your question about the 175th! So I joined the forum to see if I might assist.
Several years ago I contacted the US Army Engineer School Historian to see if there was still a 175th Engineer Rgt either active or Reserve or an organization or veterans group but only found that it had been deactivated at Camp Patrick Henry, VA (now the site of the Newport News, VA airport) in 1945 and that is that.
My late father, Harry Jones, was 1st Sgt of H&S Co. 175th Engineer Rgt, 5th US Army during Campaigns in North Africa, Sicily and Italy (6 campaign stars). He was a prolific photographer and I recall photos of groups of men on board the ship enroute and others that are packed away.
I believe the 175th may have earned one Meritorious Unit Citation and possibly two. My reason for believing this is that during WWII this was denoted by a small square patch with a gold wreath on it worn near the cuff on the right sleeve. I have a photo of my dad wearing one on his uniform in 1953. Only confusion is that when the photo was taken he had just left Korea. He had also been in the 30th Engineer Bn(TOPO) prior to Korea and I am not sure if it was earned by the 30th TOPO or the 175th. I will check the photos taken when he came home from WWII, when I can get to them (hopefully this week), to see if he wore the patch then. I also have some of his military records and any unit citation from that period should be noted on his DD214. He served 34 years active service retiring in 1974 as a Colonel. Not bad for a guy who joined the Florida National Guard in 1940 and believed that song of the time "Good by Dear, I'll Be Back in a Year"!