Shelby's Iron Brigade Brigade. The 3rd Brigade Combat Team, 1st Infantry Division was known as the Iron Brigade from its formation in 1917 through World War I, World War II and Vietnam, until some time in the early 2000s when, for reasons that are still unclear, the name was changed to Duke Brigade. The unit crest was an Iron Cross in a triangle, it appears that that was also changed. The 3rd Brigade of the 4th Infantry Division is also known as the Iron Brigade. Its unit crest is similar to the medals issued to veterans of the both Western and the Eastern
Battle of the Iron Triangle attached to the 5th Division in the Iron Triangle. The relief was accomplished on schedule, and a relative calm settled over the Base 82 battleground. The PAVN 9th Division also made adjustments during the last part of June and the first weeks of July. While the 272nd Regiment retained defensive positions in the southern part of the Iron Triangle, the 95C Regiment, refitted and with fresh replacements, returned to the Base 82 area and assumed responsibility for its defense. The 271st Regiment, held defensive positions in the Base 82 area, primarily to the north and northeast. Meanwhile, the 141st Regiment