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) 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 the south and Pyonggang in the north. The area was located 20 to 30 miles (30 to 50 kilometres) above the 38th parallel in the diagonal corridor dividing the Taebaek Mountains into northern and southern ranges and contained the major road and rail links between the port of Wonsan in the northeast and Seoul in the southwest. During the war the area was the scene of heavy