USA601.O1 42nd Infantry Division (Old)
Active 1917–1919
1943–1946
1947–present
Embroided, Full Color
The 42nd Division adopted a shoulder patch and distinctive unit insignia acknowledging the nickname. The original version of the patch symbolized a half arc rainbow and contained thin bands in multiple colors. During the latter part of World War I and post war occupation duty in Germany, the patch was changed to a quarter arc. According to the division's official history, Colonel William N. Hughes Jr., who had succeeded MacArthur as chief of staff, was credited with modifying the design to a quarter arc in an attempt to standardize it. Division lore includes the story that division commander Charles T. Menoher approved after observing shortly before a battle a rainbow he decided was a favorable omen. According to World War I veterans of the 42nd Division, soldiers removed half the original symbol to memorialize the half of the division's soldiers who had been killed or wounded during the war. They also reduced the number of colors to just red, gold and blue bordered in green, to standardize the design and make the patch easier to reproduce.
Background: The shoulder sleeve insignia was originally authorized by telegram on 29 October 1918. It was officially authorized for wear on 27 May 1922. It was reauthorized for wear when the division was reactivated for World War II. On 8 September 1947, it was authorized for the post-World War II 42nd Infantry Division when it was reactivated as a National Guard unit.