The Republican Blues were originally organized in 1808, in Savannah, Georgia. It mustered into Federal service in June 1812, in Florida.
The unit was brought into Confederate service on 20 April 1861 at Savannah, GA and was reorganized and redesignated on 22 April 1861 as Company C, 1st Battalion, Georgia Infantry. The Blues joined eight other companies of Savannah militias to form the First Volunteer Regiment of Georgia. At the order of Governor Joseph E. Brown to occupy strategic Fort Pulaski, Commander of the Regiment, Colonel Alexander Lawton, and his adjutant Charles H. Olmstead would plan and execute the first act of rebellion in the state of Georgia, On January 3, 1861, a force of 134 men and 6 artillery pieces landed at the deserted fort, and raised the red star of Georgia for the first time. Most of the force was made up of men from the Savannah Volunteer Guards, the Chatham Artillery, Georgia Hussars, and the Oglethorpe Light Infantry.
Assigned to strategic Fort McAllister in 1862,[2] they repulsed more than seven US Naval attempts to capture Fort McAllister, which protected Savannah. They successfully fought off Union ironclads, winning the praise of Confederate generals and congressmen. In May 1864, the Blues left Fort McAllister to reinforce Confederate Gen. Joseph E. Johnston's army in northern Georgia. After Union Maj. Gen. William T. Sherman's forces captured Atlanta, the Blues went into Tennessee and fought in the Battle of Nashville. It was during this time when the Blues began to show signs of the war. The Blues later marched into the Carolinas and surrendered to Sherman's army in the spring of 1865.
Once home, the Republican Blues continued their tradition of military service under the old flag. When the Spanish–American War broke out in 1898, the unit was mobilized and sent to Chickamauga, Georgia for training, but the war ended before they were deployed. In 1916 violence spilled over the US border in the south, requiring President Wilson to mobilize the National Guard to protect the US Border. Deployed after training in Macon at Camp Harris, the newly formed First Georgia Volunteer Infantry departed with the Georgia Brigade to Fort Bliss, near El Paso, Texas. They served along the border until February 1917, when the Brigade was sent home. Arriving in Savannah in March, they were informed that due to the growing war in Europe, they would not muster out. They made camp just outside Savannah where they performed guard duty until the US declared War in April. In early July 1917 they were sent back to Macon, joining the 31st Infantry (Dixie Division) forming the 118th Field Artillery assigned to the 56th Field Artillery Brigade. Other elements of the Blues were used to organize the 117th and 118th Machine Gun Battalions. Sailing to France that October, they were encamped at Brest, France when the armistice was signed, ending the war.
The unit was reorganized and designated Headquarters Battery, 118th Field Artillery, assigned to the 30th Infantry Division. With the onset of war, they again entered federal service in September 1940. As part of the 30th Division, they landed in France a week after D-Day and continued to fight across France and Belgium. In October 1944, they participated in the Siegfried Line breakthrough, then with the First Division encircled the town of Aachen. After helping blunt the enemy at the Battle of the Bulge, they raced across the continent to the Rhine River, then breaking out to trap thousands of enemy troops in the Ruhr Pocket.
From 1945 to 1973, the unit underwent a series of redesignations culminating in its current form, as part of the 48th Infantry Brigade. In 1993, the 118th Field Artillery Brigade was reorganized and as a result, the Second Battalion, 214th Field Artillery folded its colors and was retired from active duty service. This deactivation retired the name Republican Blues as well. Back home, returning to serve her home state yet again, in 1984-85 the 118th Field Artillery Brigade was headquartered at Savannah and comprised the 1st and 2nd Battalions of the 214th Field Artillery, both using 155-mm towed artillery pieces. The unit continues to serve as part of the Georgia National Guard and was recalled to serve in Bosnia, Iraq and Afghanistan most recently. Soldiers in the 48th currently wear the 3rd Division unit insignia as part of their alignment with an active duty unit.