Original WWII U.S. Relic Rubberized Invasion Gas Mask Bag Recovered On Utah Beach Normandy France. Original WWII U.S. Relic rubberized Gas Mask bag Recovered On Utah Beach Normandy France. We obtained a few of these gas masks bags that were found on Utah Beach. They were all in one spot buried. Most likely a trash dump. Gas masks were discarded by many U.S. soldiers just after the D-Day invasion when it was determined that the Germans were not going to use poison gas when the invasion began. We have several and will pick the best one for you. Here is your chance to get a 100% authentic Museum certified D-Day relic. The Gettysburg Museum of History makes 2 trips to Normandy every year to trade with other museums there. Gettysburg Museum Certified (COA) provided.