Description
On an orange rectangle arced at top and bottom with a 1/8 inch (.32 cm) white border, 2 inches (5.08 cm) in width and 3 inches (7.62 cm) in height overall, two diagonally crossed white lightning flash swords between two blue arcs issuing from either side.

Symbolism
Orange and white are the colors traditionally associated with the Signal Corps. The two blue arcs simulate the Atlantic and Pacific Oceans and the Isthmus of Panama, referring to the unit’s location and far-reaching mission and capabilities. The swords are crossed to indicate strength and support, with the blades in the form of lightning flashes to symbolize electronics and speed, underscoring the vital part of communications in military preparedness.

Background
The shoulder sleeve insignia was originally approved for the 1109th Signal Brigade on 16 May 1989. The insignia was cancelled effective 15 October 1991, and authorized for the 106th Signal Brigade with description revised on 24 March 1992. (TIOH Dwg. No. A-1-764)