Defense Files

Report by the Planning Committee of the United States and British Chiefs of Staff 1
secret
United States: ABC–4/7 (Approved)
British: WW–12

Establishment of United States Forces in North Ireland

1. Mission.

United States Army troops will be dispatched to North Ireland for the accomplishment of the following missions:

a
To relieve the mobile elements of the British forces in North Ireland and, in cooperation with British local defense forces, to defend North Ireland against attack by Axis Powers.
b
To be prepared to move into South Ireland for the defense thereof.

2. Forces.

The forces which will be employed are the V Army Corps, consisting of the 32d, 34th, 37th Divisions, Corps Troops, Army and Corps Service Elements, with the 1st Armored Division attached. This force is under the command of Major General Edmund L. Daley, U. S. Army. The strength of the field forces, less aviation and auxiliary units and anti-aircraft units, is approximately 105,000 officers and men, for which approximately 1,207,500 ship tons are required. The strength of the anti-aircraft personnel (to be provided later) is approximately 31,000 officers and men. The strength of aviation and auxiliary personnel is approximately 22,000 officers and men. Movement of air units can commence on or about February 1, 1942, if shipping is available. When the air and anti-aircraft support is assumed by the United States forces, an additional 583,000 ship tons will be required.

3. Command.

Command of all United States Army forces and personnel in the British Isles, including those in North Ireland, is vested in Major General James E. Chaney, who has been designated, “Commander [Page 257] United States Army Forces in the British Isles.” The term “command” is defined as that control of individuals, forces, functions, and establishments which is normally vested in, and exercised by, United States Army commanders by law, regulations, and competent orders. General Chaney is authorized to arrange with appropriate British authorities for the employment:

(1)
of organizations of his command under British control, and
(2)
of British organizations under United States control.

4. Strategic Direction.

a
The strategic direction of the United States Army Forces in the British Isles will be exercised by the British Government through the Commander, United States Army Forces in the British Isles.
b
The term “strategic direction” is defined to mean the function of prescribing for a force as a whole the general mission which it is to carry out over a long period of time, and such modifications of that general mission as may from time to time become necessary or desirable, without any control of details of tactical operations or administrative matters.
c
It is agreed however that units assigned to the United States North Ireland Force will not be moved to areas outside Ireland without prior consent of the Commanding General, Field Forces, United States Army.

5. Arrangements for the Operation.

The following agreements in respect to arrangements for the operation have been arrived at:

a
Questions relative to despatch of United States Army Forces and materials from the United States that may require British collaboration will be handled through the British Mission in the United States.
b
Matters connected with command, reception, distribution, accommodation and maintenance of the United States Army Forces in Northern Ireland that may require collaboration between the two governments will be handled for the United States through the Commander, United States Forces in the British Isles.
c
Weapons and equipment.
(1)
Anti-Aircraft. Initially all anti-aircraft protection for United States Field Forces, establishments and installations will be the responsibility of the British. Eventually anti-aircraft protection for United States forces in Northern Ireland will be provided from United States personnel equipped and maintained for armament and ammunition from British sources.
(2)
Field Artillery. Initially 144 25-pounders, with 1500 rounds per gun, will be delivered by the British to United States Forces in Northern Ireland. The British will supply additional ammunition [Page 258] and maintenance equipment for these weapons as requested by the Commander, United States Forces in the British Isles.
(3)
Air. It will be the responsibility of the British to provide appropriate air protection and support for the United States Field Forces, establishments and installations in Northern Ireland, in their mission, until such time as the means are made available to the Commander, United States Forces in the British Isles, to assume this responsibility.
d
Shelter.

It will be the responsibility of the British to provide shelter for the United States Army Forces in Northern Ireland.

  1. The source text was Annex 1 to JCCSs–9; see ante, p. 178. This paper is the amended and approved version of the Joint Planning Committee’s report, dated January 10, 1942, serialized as ABC–4/7, WW(JPC)7 (not printed).