The North Army (German: Nordarmee / Armeeoberkommando Nord / A.O.K. Nord) was an army level command of the German Army that existed briefly at the outbreak of World War I.
The North Army was formed (on the outbreak of the war) in Schleswig to defend the German North Sea Coast in case of British landings. It was dissolved by the end of August 1914 as its major units had been transferred away.
On formation, North Army consisted of
IX Reserve Corps
"Higher Landwehr Commander 1" (Höherer Landwehr-Kommandeur 1)
Coastal Protection
IV Battalion, 75th Landwehr Infantry Regiment
IV Battalion, 76th Landwehr Infantry Regiment
V Battalion, 76th Landwehr Infantry Regiment
North Sea Islands (5 infantry battalions, 9 heavy batteries (36 heavy howitzers), 2 pioneer companies)
Borkum
I and II Battalions, 79th Reserve Infantry Regiment
2nd Abteilung, 2nd Foot Artillery Regiment
1st Reserve Battery, 2nd Foot Artillery Regiment
1st Landwehr Pioneer Company of X Corps District
Sylt
I and II Battalions, 85th Landwehr Infantry Regiment
a Battery of 1st Abteilung, 2nd Foot Artillery Regiment
2nd Reserve Battery, 2nd Foot Artillery Regiment
1st Landwehr Pioneer Company of IX Corps District
Pellworm
III Battalion, 85th Landwehr Infantry Regiment
a Battery of 1st Abteilung, 2nd Foot Artillery Regiment
3rd Reserve Battery, 2nd Foot Artillery Regiment
Armee-Abteilung, or Army Detachment, in the sense of "something detached from an Army". It is not under the command of an Army so is, in itself, a small Army.
Armee-Gruppe, or Army Group, in the sense of a group within an Army and under its command; generally formed as a temporary measure for a specific task.
Heeresgruppe, or Army Group, in the sense of a number of armies under a single commander.
