2 people found this helpful
Dear Mr. Kearney,
Thank you for posting your request on History Hub!
We searched the National Archives Catalog and located a series titled Historical Reports of the Chief Engineer, 5/26/1917 - 8/31/1920. Within this series, there is a file unit titled Histories 501st-606th Engineers that may include the information you seek. Records of lower echelon units, such as companies, sometimes were incorporated into the files of the regiment. For access to and/or copies of this file unit, please contact the National Archives at College Park - Textual Reference (RDT2) via email at firstname.lastname@example.org.
We hope this is helpful. Best of luck with your family research!
Thank you for posting this photo. The gentleman on your great uncle’s left is my paternal grandfather, Charles Sutherland Frail. He was a steam fitter in civilian life and was a good fit for the Engineers.