Description
On a scarlet rectangle arced at top and bottom with a 1/8 inch (.32cm) yellow border 2 inches (5.08cm) in width and 3 inches (7.62cm) 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.

Distinctive Unit Insignia
Description
A gold color metal and enamel device 1 1/4 inches (3.18cm) in height overall consisting of a red enamel square with one point up on which is superimposed the crest for the Oklahoma Army National Guard, an Indian's head with war bonnet all of gold metal and encircled by a continuous gold scroll, divided in three folds, two on top and one in base and each inscribed "PRIDE, VALOR, EXCELLENCE" in red letters.
Symbolism
Scarlet and yellow (gold) are the colors used for Artillery. The Indian appears on the seal of the State of Oklahoma, and alludes to the home area of the organization.
Background
The distinctive unit insignia was originally approved for the 45th Field Artillery Group on 17 May 1972. The insignia was redesignated for the 45th Field Artillery Brigade on 12 Dec ember 1978. It was redesignated effective 1 September 2008, for the 45th Fires Brigade.