Description
On a scarlet rectangle arced at top and bottom with a 1/8 inch (.32 cm) yellow border 2 inches (5.08 cm) in width and 3 inches (7.62 cm) in height overall a black diagonal field piece from upper left to bottom right between a yellow thunderbird at top and a yellow arrowhead at bottom.

Symbolism
Scarlet and yellow are the colors traditionally used by Field Artillery units. The field piece denotes the Brigade's affiliation and mission while the thunderbird and arrowhead suggest its heritage and history.

Background
The shoulder sleeve insignia was originally approved for the 45th Field Artillery Brigade on 25 March 1997. It was redesignated effective 1 September 2008, for the 45th Fires Brigade. (TIOH Dwg. No. A-1-830)