For command and control purposes within the Ohio Army National Guard, 1st Battaltion, 145th Armored Regiment, is a subordinate battalion of the 37th Infantry Brigade Combat Team.

In May 2016, the battalion donned the Shoulder Sleeve Insignia of the 34th Infantry Division in anticipation of formal alignment with the 1st Armored Brigade Combat Team in September 2016.

Reorganized and re-designated from the 1st Battalion, 107th Cavalry Regiment on 1 September 2007, the first mobilization and deployment of the 1st Battalion, 145th Armored Regiment in its current form was the 2009 Multinational Force and Observers MFO-52 mission responsible for multiple observation posts throughout Egypt's Sinai Peninsula and the operation of MFO South Camp at Sharm el Sheik, Egypt, in partnership with ten other participating nations.

The battalion has also deployed select individual soldiers in support of the combined Hungary-United States Operational Mentor and Liaison Team with service in Afghanistan.

The falcon from the arms of Montfaucon, France and the wavy bend for the Escaut (Scheldt) River symbolize the most outstanding feats of the regiment during World War I.

Due to the quick nature of the war, the regiment was mustered out of federal service at Cleveland, Ohio on 5 November 1898 and resumed status as the 5th Infantry.

The regiment was mobilized at Camp Willis, near present-day Upper Arlington, Ohio, and served along the border in the vicinity of El Paso, Texas, from September 1916 until it was mustered out on 15 March 1917 at Ft. Wayne, Michigan.

The 145th Infantry arrived at the port of New York on 27 March 1919 on the troopship USS Great Northern and was emobilized on 22 April 1919 at Camp Sherman, Ohio.

It was heavily influenced by the regiment's World War I service, displaying a wavy bend to symbolize the Scheldt (Escaut) River and a falcon from the arms of Montfaucon, France.

In order to ultimately assault or neutralize Rabaul, the allies would first have to capture the remainder of the Solomon Islands and portions of northeast New Guinea.

Progress for Liversedge and other elements invading New Georgia was agonizingly difficult and slow due in greater part to hostile jungle terrain and weather than Japanese resistance.

By 9 July, the offensive officially began and many allied units saw limited forward progress amid harsh close combat.

It was during this offensive that Major Carl F. Coleman, the regiment's operations officer noted, "enemy strong points encountered in this fashion oftentimes resulted in hasty withdrawals which were costly both in men and weapons."

As XIV Corps advanced into the last high ground protecting Munda Field, trying to break the Japanese line and defend against a counterattack, Private First Class Frank J. Petrarca demonstrated conspicuous gallantry and intrepidity in action to receive the Medal of Honor.

Over the course of 27 to 31 July, Private Petrarca, a medic, would repeatedly advance under intense enemy fire to uncover, treat, and evacuate wounded soldiers.

"[8] By November 1943, after operations on New Georgia and elsewhere, Adm. Halsey had been ordered to seize airfield sites on the final Solomon Island of Bougainville, which was occupied by approximately 37,500 Japanese soldiers.

Consistent with the rugged jungle terrain, this section of perimeter contained tactically important pieces of high ground which he refused to abandon after hard lessons learned at Munda.

By 7:00 am on the 8th, the 145th Infantry's 2nd Battalion began receiving small arms fire, combined with focused artillery barrages, making it clear that the Japanese would be attacking Hill 700.

Fighting darkness worsened by fog and rain, the regiment was aided by artificial illumination fashioned by Staff Sergeant Otis Hawkins.

Forward observers, directing accurate artillery and mortar fire at dangerously close distances repelled a fresh Japanese assault.

By noon on 9 April, elements of the 1st and 2nd battalions, 145th Infantry, counterattacked but by 10 pm, only a few pillboxes had been regained and the Japanese still held their foothold on Hill 700.

The next morning, an American 90 mm antiaircraft gun and bombers had been brought to bear on Japanese positions on the hill, coordinated with marking artillery fire.

At dawn on 11 March, the Japanese charged the hill brandishing sabers and screaming epithets, despite withering American machinegun and small arms fire.

Over the next two days, 148th Infantry soldiers fought aggressively, using every weapon in their inventory – from bazookas to flamethrowers – to defeat the Japanese and regain the Hill for the Americans.

The cooperation of the two Ohio infantry regiments lead to the successful defense of Hill 700 and the entire allied air installation at Empress Augusta Bay.

By April 30, the 145th Infantry relieved the 6th Division in Montalban to capture Wawa Dam which resulted into a seesaw battle during the course of the month of May, and ultimately completion of the objective.

[9] Overall, for their fighting in the Northern Solomons and Luzon Campaigns, soldiers in the regiment received twenty-one Distinguished Service Crosses and one Medal of Honor.

In January 1954, 145th Infantry units began reorganizing in northeast Ohio armories with the formation being complete for a 15 June ceremony at Camp Perry.

However, as communism fell and coalition forces quickly disposed of the Iraqi Army during the Gulf War, the need for heavy, armored formations faded away.

Since the beginning of the Global War on Terrorism, soldiers and units now comprising the 1st Battalion, 145th Armored Regiment, have been active in many domestic and expeditionary federal missions.