Republican Blues

118th Field Artillery Republican Blues
118th Field Artillery insignia
Active	1808–present
Country	United States
Allegiance	United States of America  Confederate States of America
Branch	United States Army  Confederate States Army
Type	Artillery
Size	Brigade
Garrison/HQ	Savannah, Georgia
Nickname(s)	Blues (special designation)[1] Lightning Brigade (former)
Engagements	War of 1812 American Civil War World War I World War II Iraq Campaign Afghanistan Campaign
Decorations	Presidential Unit Citation Meritorious Unit Commendation French Croix de Guerre with Palm Luxembourg Croix de Guerre Belgian Fourragere
Commanders
Notable commanders	Robert H. Anderson John Wayne Anderson George Wayne Anderson William Daniel Dixon

The Republican Blues were a military company formed in Savannah, Georgia. The Blues were first organized in 1808 and served at Fort Jackson and in Florida during the War of 1812. The Blues, typical of Savannah's old military units, were a fraternal social organization and a well-trained military unit. The Blues defended Georgia's coast from the Union Navy between 1861 and 1864. Unlike most Confederate units formed during the Civil War, the Republican Blues had been an existing militia organization for over fifty years before the war started. They recruited from the most prominent families in and around Savannah. They fought in all the nations wars after The Civil War as part of the Georgia National Guard, with the lone exception being The Spanish–American War. Today they remain in service, as a modular artillery brigade of the Georgia Army National Guard, the 118th Field Artillery.

As part of the 48th Infantry Brigade, the 118th FA is of the oldest units in US Army history. It is one of few units in the US military that also saw service as a unit of the Confederate States of America during the US Civil War.