Please thank your uncle for me for his service to his country on that day. My father was attached to the 1st Batt. 115th Reg 29th Inf. that day and was awarded the DUC which you speak of as well as the Croix de Guerre w/Palm device.The DUC was listed on his WD AGO 53-98 Certificate of Service, line 29 Decorations and Citations "GO WD 14 3 MAR 45".He was demobilized on 9/15/45. The Croix de Guerre w/Palm wasn't awarded until 7/15/46 so therefore it wasn't listed here as he was no longer actively serving when the award was cited.I only learned of this award when I finally received my fathers medals. Along with the medals, they told me of the inclusion of the Croix de Guerre to the medals that the batallion and regiment were awarded. They also sent me an ammendment (form DD-215)to his service record that now includes this medal. The Croix de Guerre was a foreign award and as such the US military does not distribute this medal. I was told that I could buy one but that doesn't sit right with me to have to buy something earned. I contacted the French government with all the paper work and was told politely that they would not issue one. Go to this link which is for a copy of the "Unit Citation and Campaign Participation Credit Register". This is a HUGE (50MB) pdf file and when you've got it, go to page 169 of the document which lists the accomplishments of the 115th regiment.
Do you have the citation that list why the 115th received this award? If not, let me know and I can send you the text. If I can be of any other service, please let me (us) know.