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
Iron Triangle (Korea) fighting between the Chinese People's Volunteer Army and the US Eighth Army during the Battle of White Horse and the Battle of Triangle Hill in October–November 1952. The Battle of Pork Chop Hill in March–July 1953 took place to the west of the Iron Triangle. This complex was eventually named the "Iron Triangle" by newsmen searching for a dramatic term. Today, the region straddles the Demilitarized Zone. Iron Triangle (Korea) The Iron Triangle was a key communist Chinese and North Korean concentration area and communications junction during the Korean War, located in the central sector between Cheorwon and Gimhwa-eup in