German First Army
First Army, commanded by Generaloberst Alexander von Kluck
II Army Corps
- 30th Aviation Battalion
- 15th Foot Artillery Regiment (heavy)
- 3rd Artillery Brigade
- 3rd Horse Grenadiers
- 5th Infantry Brigade
- 2nd Grenadier Regiment
- 9th Grenadier Regiment
- 6th Infantry Brigade
- 34th Fusilier Regiment
- 42nd Infantry Regiment
- 4th Artillery Brigade
- 12th Dragoons
- 7th Infantry Brigade
- 14th Infantry Regiment
- 149th Infantry Regiment
- 8th Infantry Brigade
- 49th Infantry Regiment
- 140th Infantry Regiment
III Army Corps
- 7th Aviation Battalion
- 2nd Guard Foot Artillery (heavy)
- 3rd Hussars
- 5th Artillery Brigade
- 9th Infantry Brigade
- 8th Leib Grenadier Regiment
- 48th Infantry Regiment
- 10th Infantry Brigade
- 12th Grenadier Regiment
- 52nd Infantry Regiment
- 6th Artillery Brigade
- 11th Infantry Brigade
- 20th Infantry Regiment
- 35th Fusilier Regiment
- 12th Infantry Brigade
- 24th Infantry Regiment
- 64th Infantry Regiment
- 3rd Jaeger Battalion
IV Army Corps
- 9th Aviation Battalion
- 4th Foot Artillery Regiment (heavy)
- 10th Hussars
- 7th Artillery Brigade
- 13th Infantry Brigade
- 26th Infantry Regiment
- 66th Infantry Regiment
- 14th Infantry Brigade
- 27th Infantry Regiment
- 165th Infantry Regiment
- 8th Artillery Brigade
- 15th Infantry Brigade
- 36th Fusilier Regiment
- 93rd Infantry Regiment
- 16th Infantry Brigade
- 72nd Infantry Regiment
- 153rd Infantry Regiment
- 4th Jaeger Battalion
IX Army Corps
- 9th Aviation Battalion
- 20th Foot Artillery Regiment (heavy)
- 16th Dragoons
- 17th Artillery Brigade
- 33rd Infantry Brigade
- 75th Infantry Regiment
- 76th Infantry Regiment
- 34th Infantry Brigade
- 89th Grenadier Regiment
- 90th Fusilier Regiment
- 9th Jaeger Battalion
- 18th Artillery Brigade
- 35th Infantry Brigade
- 84th Infantry Regiment
- 86th Fusilier Regiment
- 36th Infantry Brigade
- 31st Infantry Regiment
- 85th Infantry Regiment
III Reserve Corps
- 2nd Reserve Dragoon Regiment (3 squadrons)
- 6th Reserve Field Artillery Regiment (6 batteries)
- 9th Reserve Infantry Brigade
- 8th Reserve Infantry Regiment
- 48th Reserve Infantry Regiment
- 10th Reserve Infantry Brigade
- 12th Reserve Infantry Regiment
- 52nd Reserve Infantry Regiment
- 3rd Reserve Uhlan Regiment (3 squadrons)
- 6th Reserve Field Artillery Regiment (6 batteries)
- 11th Reserve Infantry Brigade
- 20th Reserve Infantry Regiment
- 24th Reserve Infantry Regiment
- 12th Reserve Infantry Brigade
- 26th Reserve Infantry Regiment
- 35th Reserve Infantry Regiment
IV Reserve Corps
- 1st Reserve Schwere Reiter Regiment (3 squadrons)
- 7th Field Artillery Regiment (6 batteries)
- 13th Reserve Brigade
- 27th Reserve Infantry Regiment
- 36th Reserve Infantry Regiment
- 14th Reserve Brigade
- 66th Reserve Infantry Regiment
- 72nd Reserve Infantry Regiment
- 4th Reserve Jaeger Battalion
- 1st Reserve Jäger zu Pferde Regiment (3 squadrons)
- 22nd Reserve Field Artillery Regiment (6 batteries)
- 43rd Reserve Infantry Brigade
- 71st Reserve Infantry Regiment
- 94th Reserve Infantry Regiment
- 11th Reserve Jaeger Battalion
- 44th Reserve Infantry Brigade
- 32nd Reserve Infantry Regiment
- 82nd Reserve Infantry Regiment
10th Mixed Landwehr Brigade
- 12th Landwehr Infantry Regiment
- 52nd Landwehr Infantry Regiment
11th Mixed Landwehr Brigade
- 20th Landwehr Infantry Regiment
- 35th Landwehr Infantry Regiment
27th Landwehr Brigade
- 53rd Landwehr Infantry Regiment
- 55th Landwehr Infantry Regiment
Composite Landwehr Cavalry Unit (3 squadrons) Composite Lansturm Artillery Unit (2 batteries)
Army Troops
- 12th Aviation Battalion
