The Georgia State Defense Force's rich heritage dates back to England.
Under the direction of General James Oglethorpe, Sergeants of the Guard trained future colonists in militia tactics.
As settlers began arriving in Georgia around 1733, many became members of General James Oglethorpe's militia and were called upon during the Battle of Bloody Marsh in 1742 to help repel the Spanish invasion of Georgia.
These militia forces later joined General George Washington in the fight for American Independence.

The volunteer militia remained in continuous service throughout the 18th and 19th centuries.
During this time, the militia participated in Indian wars against the Creeks, Cherokees, and Choctaws, and, with the outbreak of the American Civil War, Georgia responded with over 100 volunteer regiments, battalions, and batteries.
The portion that remained at home helped to defend Atlanta and Macon, shadowed by the Union advance in 1864.
This volunteer commitment was second only in number to the Commonwealth of Virginia.

In 1917, following passage of the National Defense Act of 1916, the National Guard could be called into federal service.
As a result, Georgia law organized the militia into three classes: the National Guard, the naval militia, and the unorganized militia.
It further created a separate Home Guard, or State Constabulary, also subject to military law.
After World War I, the militia was called to put down labor unrest at factories and mills across the state.

In 1940, with the onset of World War II, Governor E.D. Rivers requested the American Legion to organize the Georgia State Defense Corps.
The next year, in 1941, Colonel Ryburn Clay was appointed to head the State Defense Corps and it was activated and placed under the command of Brigadier General Omar Bradley, commanding officer at Ft.
Benning, Georgia.
Its name was shortly changed to the State Defense Corps of Georgia and then to the Georgia State Guard in 1942.
During World War II, 35,000 volunteer members guarded war plants, critical communications facilities, utilities, reservoirs, and transportation facilities.
Approximately 8,000 served at any given time with about 10,000 left at the end of the war.
They were trained to repel an invasion that never came.
Although not officially disbanded until 1951, the Georgia State Guard began its retirement in July 1946.

The Georgia State Guard was re-authorized in 1973 to serve as a constabulary force, and throughout the 1970s and 1980s was tasked to serve as a backup for state police forces.
Legislation resulted in the first muster in 1985 when it was re-activated as the Georgia State Defense Force under the command of Brigadier General John Gillette.
The force was tasked to provide a cadre around a larger force to assume the vacated domestic missions of Georgia National Guard members called to federal duty.

The current Georgia State Defense Force is authorized by the federal government under 32 USC 109(c), by the State of Georgia under Title 38 of the Official Code of Georgia Annotated, and by the National Guard Bureau under NGR 10-4.
The Georgia Department of Defense is composed of the State Defense Force, the Army National Guard, and the Air National Guard, all of whom serve under the direction of the adjutant general of Georgia.
			
Recent operations include support to National Guard units during the Gulf War, participation in the 1996 Atlanta Olympic Games, emergency aid to agencies such as the Federal Emergency Management Agency (FEMA) and Georgia Emergency Management Agency (GEMA), support to Georgia National Guard units and their families since 2001, activation during the 2004 G-8 Summit at Sea Island, the 2005 Katrina and Rita hurricane evacuations, and response to Hurricanes Matthew, Irma, and Michael.

In 2010, the GSDF and its members were recognized by a special resolution of the Georgia Legislature for their participation in Operation Healing Hands, providing disaster relief to earthquake victims in Haiti.
 After the devastating outbreak of tornadoes across the Southeast U.S. in May, 2011, members of the GSD
The Georgia State Defense Force's rich heritage dates back to England. Under the direction of General James Oglethorpe, Sergeants of the Guard trained future colonists in militia tactics. As settlers began arriving in Georgia around 1733, many became members of General James Oglethorpe's militia and were called upon during the Battle of Bloody Marsh in 1742 to help repel the Spanish invasion of Georgia. These militia forces later joined General George Washington in the fight for American Independence.
The volunteer militia remained in continuous service throughout the 18th and 19th centuries. During this time, the militia participated in Indian wars against the Creeks, Cherokees, and Choctaws, and, with the outbreak of the American Civil War, Georgia responded with over 100 volunteer regiments, battalions, and batteries. The portion that remained at home helped to defend Atlanta and Macon, shadowed by the Union advance in 1864. This volunteer commitment was second only in number to the Commonwealth of Virginia.
In 1917, following passage of the National Defense Act of 1916, the National Guard could be called into federal service. As a result, Georgia law organized the militia into three classes: the National Guard, the naval militia, and the unorganized militia. It further created a separate Home Guard, or State Constabulary, also subject to military law. After World War I, the militia was called to put down labor unrest at factories and mills across the state.
In 1940, with the onset of World War II, Governor E.D. Rivers requested the American Legion to organize the Georgia State Defense Corps. The next year, in 1941, Colonel Ryburn Clay was appointed to head the State Defense Corps and it was activated and placed under the command of Brigadier General Omar Bradley, commanding officer at Ft. Benning, Georgia. Its name was shortly changed to the State Defense Corps of Georgia and then to the Georgia State Guard in 1942. During World War II, 35,000 volunteer members guarded war plants, critical communications facilities, utilities, reservoirs, and transportation facilities. Approximately 8,000 served at any given time with about 10,000 left at the end of the war. They were trained to repel an invasion that never came. Although not officially disbanded until 1951, the Georgia State Guard began its retirement in July 1946.
The Georgia State Guard was re-authorized in 1973 to serve as a constabulary force, and throughout the 1970s and 1980s was tasked to serve as a backup for state police forces. Legislation resulted in the first muster in 1985 when it was re-activated as the Georgia State Defense Force under the command of Brigadier General John Gillette. The force was tasked to provide a cadre around a larger force to assume the vacated domestic missions of Georgia National Guard members called to federal duty.
The current Georgia State Defense Force is authorized by the federal government under 32 USC 109(c), by the State of Georgia under Title 38 of the Official Code of Georgia Annotated, and by the National Guard Bureau under NGR 10-4. The Georgia Department of Defense is composed of the State Defense Force, the Army National Guard, and the Air National Guard, all of whom serve under the direction of the adjutant general of Georgia.			
Recent operations include support to National Guard units during the Gulf War, participation in the 1996 Atlanta Olympic Games, emergency aid to agencies such as the Federal Emergency Management Agency (FEMA) and Georgia Emergency Management Agency (GEMA), support to Georgia National Guard units and their families since 2001, activation during the 2004 G-8 Summit at Sea Island, the 2005 Katrina and Rita hurricane evacuations, and response to Hurricanes Matthew, Irma, and Michael.
In 2010, the GSDF and its members were recognized by a special resolution of the Georgia Legislature for their participation in Operation Healing Hands, providing disaster relief to earthquake victims in Haiti.  After the devastating outbreak of tornadoes across the Southeast U.S. in May, 2011, members of the GSD
Georgia State Defense Force