Freikorps Hessen was used to form the unit: Reichswehr-Brigade 18 in June 1919.
Formed in the area: Generalkommando XVIII. Army Corps (Free State of Hesse)
Organization:
Volunteer Battalion Darmstadt (also Sicherheitsgarde Darmstadt)
Volunteer Battalion 116
Volunteer Battalion 117
Volunteer Battalion 118
Volunteer Battalion 168
2 x Esk./Freiw.Drag.Rgt. 23
2 x Esk./Freiw.Drag.Rgt. 24
Volunteer Field Artillery Regiment 25
Volunteer Field Artillery Regiment 61
Formed in the area: Generalkommando XVIII. Army Corps (Free State of Hesse)
Organization:
Volunteer Battalion Darmstadt (also Sicherheitsgarde Darmstadt)
Volunteer Battalion 116
Volunteer Battalion 117
Volunteer Battalion 118
Volunteer Battalion 168
2 x Esk./Freiw.Drag.Rgt. 23
2 x Esk./Freiw.Drag.Rgt. 24
Volunteer Field Artillery Regiment 25
Volunteer Field Artillery Regiment 61