45th Fires Brigade ( United States ) The 45th Fires Brigade is a modular field artillery brigade of the United States Army headquartered in Mustang , Oklahoma . It is a part of the Oklahoma Army National Guard . Formed from elements of the disbanded 45th Infantry Division which saw action during World War II and the Korean War , along with the 45th Infantry Brigade Combat Team and 90th Troop Command , the 45th Fires Brigade was activated in 1968 as the 45th Field Artillery Group , later redesignated the 45th Field Artillery Brigade . The unit was again redesignated 45th Fires Brigade in 2008 with the implementation of Army Transformation . 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 . Organization . The brigade is a subordinate unit of the Oklahoma Army National Guard , headquartered in Mustang , OK . The brigade organically commands two battalion s , a target acquisition battery , a maintenance company , and a network support ( signal ) company . These units are : In addition , the brigade has training oversight of three additional firing battalions and their associated forward support companies that reside in other states : History . The history of the 45th Fires Brigade can be traced back to the days following WWI when LTC William S . Key , I was appointed Captain of Field Artillery in the Oklahoma Army National Guard . He was directed to organize a light artillery battery at Wewoka , Oklahoma . By 1920 , Oklahoma had three regiments of artillery , of which , the 158th is the core of today ' s fires brigade . 45th Infantry Division . On 19 October 1920 , the Oklahoma State militia was organized as the 45th Infantry Division of the Oklahoma Army National Guard and organized with troops from Arizona , Colorado , New Mexico , and Oklahoma . The division was organized and federally recognized as a US Army unit on 3 August 1923 in Oklahoma City , Oklahoma . Prior to World War II , the division was called on many times to maintain order in times of disaster and to keep peace during periods of political unrest . 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 . The division would go on to see combat in World War II as one of four national guard divisions active during the war . The division was active for over five years , participating in eight campaigns , four amphibious assault s , for a total of 511 days of combat . Following World War II the division became an all - Oklahoma organization . In 1950 , the division was also called into service during the Korean War , participating in four campaigns and fighting for 429 days . Cold War years . In 1968 , the division was disbanded and the 45th Fires Brigade was one of the units formed in its place . 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 . Instead , the brigade was used to train active duty units , and other general peacetime missions within the United States . In 1991 , the brigade became affiliated with the 1st Cavalry Division , providing training services for the division soldiers . Desert Storm . The 158th was a late deploying unit for Operation Desert Shield in 1991 . By the time the 1 - 158th Field Artillery came together in the Saudi desert , the ground offensive of Desert Storm was only days away . The l - 158th was assigned to the 75th Field Artillery Brigade , and their purpose was to fire preparatory fires on Iraqi artillery positions and other targets the following day , February 21 . This was also the beginning of the battalion constantly being on the move . This battalion would support seven different higher headquarters throughout the unit ' s time in - theater : 3d Armored Division ; VII Corps Artillery , 210th Field Artillery Brigade in the 2d Armored Cavalry Regiment , the 1st Infantry Division , and assigned in support of the 1st Cavalry Division . 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 . On February 16 , Battery A engaged six enemy targets with 98 rockets . The next day the battery delivered 71 rockets on four targets and on February 20 , it launched 48 rockets against four more targets . The remainder of the 1 - 158th FA was unloading its launchers at Dammarn Port , Saudi Arabia . Battery B , and C Battery , soon began hitting enemy targets in preparation for the ground offensive . 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 . Iraq and Afghanistan . Following September 11 , 2001 , the 45h Fires Brigade would not be left out of the deployment rotations . B / 171st deployed to Afghanistan in 2003 , and the remainder of the brigade deployed to Iraq in 2008 , less the network support company which was being established .