Just as the 45th IBCT and the 90th Troop Command, the brigade retained the shoulder sleeve insignia of the 45th Infantry Division, only designing and approving its own SSI in 1997.

[4] These units are: Two additional field artillery battalions of the brigade are under administrative control of other formations: The history of the 45th Fires Brigade can be traced back to the days following World War I when LTC William S. Key, I was appointed Captain of Field Artillery in the Oklahoma Army National Guard.

Oklahoma Governor John C. Walton used division troops to prevent the State Legislature from meeting when they were preparing to impeach him in 1923.

Governor William H. Murray called out the guard several times during the depression to close banks, distribute food and once to force the State of Texas to keep open a free bridge over the Red River which Texas intended to collect tolls for, even after federal courts ordered the bridge not be opened.

[7] The brigade did not participate in any overseas operations through the 1970s or 1980s, as the size of the active duty force negated the need for National Guard formations to be deployed during the relatively small contingencies of that period.

As part of VII Corps' repositioning of its units to the west in preparation for the "Hail Mary" tactic to defeat the Iraqi forces, A Battery, sent its advance party on a 95-mile desert march not knowing that within three days of that move, the battery would be the first Army National Guard unit to fire on the enemy.

In total the 1-158 Field Artillery Oklahoma Army National Guard fired 903 rockets and traveled hundreds of kilometers in support of VII Corps operations.