Description
On a brick red disc 2 inches (5.08 cm) in diameter, a golden yellow segment of a railway track consisting of two vertical rails on three horizontal crossties, the central crosstie surmounted by a white star, all within a 1/8 inch (.32 cm) golden yellow border.

Symbolism
Brick red and golden yellow are the colors used for the Transportation Corps. The segment of railway track symbolizes the unit’s former mission, and the three ties allude to its numerical designation. The star is symbolic of the command.

Background
The shoulder sleeve insignia was originally approved for the 3d Transportation Command on 23 October 1969. It was redesignated for the 3d Transportation Brigade on 6 September 1972. The insignia was redesignated for the 3d Transportation Agency effective 16 September 1994, with the description and symbolism revised. It was redesignated effective 17 September 2004, for the 3d Transportation Command. (TIOH Drawing Number A-1-526)