The flag has a 3-foot hoist by 4-foot fly with a background divided diagonally from upper hoist to lower fly, ultramarine blue above and dark blue below.  Centered on the flag is the branch insignia for the National Guard Bureau in yellow with four white five-pointed stars horizontally centered, two on each side of the insignia.  Above the branch insignia is a white scroll inscribed “1636” in red letters.  Below the branch insignia is a white scroll inscribed “National Guard” in red letters.  The fringe is yellow.

This flag (approved by the Chief, National Guard Bureau, 28 December 2012) background is divided diagonally from upper hoist to lower fly and from upper fly to lower hoist.  The upper and lower sections are ultramarine blue, and the end sections dark blue.  Centered on the flag is the branch insignia for the National Guard Bureau in yellow with three white five-pointed stars, two horizontally centered on each side of the insignia and one centered above the insignia.  Above the branch insignia and star is a white scroll inscribed “1636” in red letters.  Below the branch insignia is a white scroll inscribed “NATIONAL GUARD” in red letters.  The fringe is yellow.