The following SECRET directive was declassified in accordance with DOD Dir 5200.9 on 27 September 1958. U.S. SECRET EQUALS BRITISH MOST SECRET
BIGOT
SUPREME HEADQUARTERS, ALLIED EXPEDITIONARY FORCE
SHAEF (44) 22 10 March, 1944 SUBJECT: Operation 'OVERLORD' TO: Admiral Sir Bertram H. Ramsay, KCB, KBS, KVO,
Allied Naval Commander, Expeditionary Force,General Sir Bernard L. Montgomery, KCB, DSO,
Commander-in-Chief, 21 Army Group,Air Chief Marshal Sir Trafford L. Leigh-Mallory, KCB, DSO,
Air Commander-in-Chief, Allied Expeditionary Air Force.PREVIOUS DIRECTIVES
1. COSSAC (43) 76 and COSSAC (44) 4 are cancelled and the following substituted therefor.
OBJECT
2. The object of Operation 'OVERLORD' is to secure a lodgement area on the Continent from which further offensive operations can be developed. The lodgement area must contain sufficient port facilities to maintain a force of some twenty-six to thirty divisions, and enable that force to be augmented by follow-up shipments from the UNITED STATES and elsewhere of additional divisions and supporting units at the rate of three to five divisions per month.
3. The operation will be carried out in two phases:-
Phase I - The effecting of an assault landing on the NORMANDY beaches between the limits of QUINEVILLE in the WEST and CABOURG-LES-BAINS in the EAST, to be followed by the early capture and development of airfield sites and the capture of the port of CHERBOURG.
Phase II - The enlargement of the area captured in Phase I so as to secure the whole of the CHERBOURG, LOIRE and BRITTANY group of ports.
TARGET DATE
4. The target date for this operation is 31st May, 1944.
COMMAND AND CONTROL
5. The Supreme Commander controls and co-ordinates the planning and execution of the operation as a whole.
6. You will be responsible to him for the planning of the operation and for its execution, when so ordered.
7. You will work in close consultation with the Service Ministries (through the Executive Planning Section) and with Headquarters, ETOUSA, in connection with the mounting of the operation.
BIGOT
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2.8. The Commander-in-Chief, 21 Army Group, will be responsible for the command of all ground forces engaged in the operation until such time as the Supreme Commander allocates an area of responsibility to the Commanding General, First (US) Army Group.
9. The Supreme Commander will effect the allocation of an area of responsibility to the First (US) Army Group by the designation of an appropriate boundary line, the general principle being adopted that UNITED STATES forces will be on the right and BRITISH/CANADIAN forces on the left of the line throughout the operation. The effective date for the allocation of an area of responsibility to First (US) Army Group will be when, in the opinion of the Supreme Commander, the number of UNITED STATES troops landed on the Continent warrants their control being exercised by the First (US) Army Group Commander.
ALLOTMENT AND CONSTITUTION OF FORCES
Naval Forces
10. An estimate of the landing ships and craft which will be available for the operation is shown at Appendix 'A'.
11. Other naval forces which will be available to you will be designated later.
12. An estimate of merchant shipping which will be available is shown at Appendix 'B'.
Ground Forces
13. A suitable staff and signals increment from First (US) Army Group, will be attached to Headquarters, 21 Army Group, at a time to be mutually arranged. This increment less such staff as may be necessary for liaison or administration of any US force remaining under control of Commander-in-Chief, 21 Army Group, will rejoin Headquarters, First (US) Army Group, when the latter is set up on the Continent.
14. An estimate of the UNITED STATES and BRITISH/CANADIAN ground forces which will be available in the UNITED KINGDOM for the operation on 31st May, 1944, is attached at Appendix 'C'.
15. In addition to the forces forming 21 Army Group and such commandos as are required, the following UNITED STATES troops will be under the command of the Commander-in-Chief, 21 Army Group, for the operation, until such time as the Supreme Commander allocates an area of responsibility to the Commanding General, First (US) Army Group, (see paragraph 8).
- First (US) Army reinforced by:-
- Such UNITED STATES airborne troops as are required for the operation consistent with the air lift available.
- Such ranger battalions as are required for the operation.
- Such additional US Army Group troops as are required for the support and maintenance of UNITED STATES forces.
- A supply and maintenance organisation to consist of a Base Section Headquarters and such SOS troops and personnel as are necessary. These troops will pass to the control of First (US) Army Group in the Communications Zone when Headquarters, First (US) Army Group, is set up on the Continent.
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3.
- Such additional UNITED STATES troops including those required for logistical support as are placed under command of Commander-in-Chief, 21 Army Group, in the execution of plans prepared for the seizure of the lodgement area and for initiation operations subsequent to the seizure of the lodgement area. (See paragraph 25.)
16. All allied contingents now under the control of the Commander-in-Chief, 21 Army Group, may be employed in conformity with the existing directive issued to each of them.
Air Forces
17. An estimate of the air forces which will be available on 31st May, 1944 is shown at Appendix 'D'.
18. An estimate of the air lift which will be available on 31st May, 1944 for the operation is shown at Appendix 'E'.
TRAINING
19. Under direction of the Supreme Commander, you will be responsible for the training of all forces now assigned to your commands, and, effective on date of assignment, of such additional forces as may subsequently be placed under your command.
Constitution of forces
20. You will be responsible that the forces under your respective commands as given in paragraphs 10-11, 15-16 and 17-18 are properly constituted, and will report to Supreme Headquarters at the earliest possible moment any major deficiencies in men or material which cannot be met through normal channels.
EXECUTION OF THE OPERATION
21. You will adhere to the broad design of the operation as given in the Outline Plan which has been approved by the Combined Chiefs of Staff. A copy of this Plan (COSSAC (43) 28; COS (43) 416 (0)) has already been issued to you.
22. You will plan on the basis of a simultaneous lift of eight assault brigades being available.
23. You will ensure the earliest establishment of 'MULBERRIES' at ARROMANCHES and ST LAURENT, the exact positions of which have already been notified to you.
24. The Commander-in-Chief, 21 Army Group, will direct and co-ordinate the planning, by First (US) Army Group, for the employment of UNITED STATES troops, in addition to those troops referred to in paragraph 15a, which will be required for the seizure of the lodgement area and for initiating operations subsequent to the seizure of the lodgement area. (See Part III, COSSAC (43) 28.)
25. Except in emergency, and then only for the shortest possible time, the Commander-in-Chief, 21 Army Group will avoid placing a UNITED STATES or BRITISH formation lower than a corps under the command of another nationality.
SOE/SO
26. Headquarters, SOE/SO, in LONDON is under the operational control of the Supreme Commander for operations in North-West EUROPE. You are authorised direct communication with Headquarters, SOE/SO, in the formulation of plans for their activities in connection with this operation. Approval of this Headquarters will be obtained prior to the execution of such plans. SOE/SO liaison missions will be appointed, as necessary, in order to place you in contact with SOE/SO resistance groups inside occupied territory and to facilitate the co-operation of these groups, and other indigenous movements, with your forces.
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4.ADMINISTRATION
Functions of Supreme Headquarters
27. The functions of Supreme Headquarters as regards administrative policy and co-ordination are defined at Appendix 'F'. Administrative Instructions conveying the policy of the Supreme Commander will be issued as may be necessary.
Maintenance
28. You are responsible for determining the requirements in material and personnel for the maintenance of all forces under your commands, and for making the necessary arrangements for obtaining the required resources and for distributing resources which are obtained.
29. For this purpose you will deal direct with Headquarters, ETOUSA, COMNAVEU, and the Service Ministries on related matters which are within the announced policies of this headquarters or which are not of common concern to BRITISH and UNITED STATES forces. Recommendations on matters of common concern not already covered by announced policies will be submitted to this headquarters.
30. You will be responsible for ensuring sound maintenance and for directing administrative development within the zone of operations in accordance with directives from this headquarters. Administrative procedures of UNITED STATES forces will function as far as practicable through normal UNITED STATES channels.
Ground Forces
31. The Commander-in-Chief, 21 Army Group, will be responsible for the administration of all ground forces engaged in the operation until such time as the Supreme Commander allocates an area of responsibility to the Commanding General, First (US) Army Group. Pending such time, the First (US) Army Group will attach to the 21 Army Group an adequate Staff Section for administration of UNITED STATES ground forces which are now under, or may come under, command of 21 Army Group.
Base and lines of communication
32. Initially the main base will be the UNITED KINGDOM.
33. Subject to such general direction as may be exercised by the Supreme Commander, the Commander-in-Chief, 21 Army Group, in collaboration with Air Commander-in-Chief, Allied Expeditionary Air Force, is responsible for the preparation of plans for, and the general supervision of, the development and operation of the lines of communication on the Continent; for determination of requirements for movement to the Continent; and for supervision of movement on the Continent. The Deputy Theater Commander (US) is the Commander of the Communications Zone (US). He will designate a Deputy Commander, Communications Zone (US), with adequate staff, who will be responsible under the general direction of the Commander-in-Chief, 21 Army Group, for initial planning, development and operation of the UNITED STATES Communications Zone on the Continent. The Communications Zone will be attached to 21 Army Group and will remain so attached until an area of responsibility on the Continent has been assigned to First (US) Army Group by the Supreme Commander at which time the attachment will pass to First Army Group.
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5.SEPARATE INSTRUCTIONS
34. Separate instructions will be furnished you on the following matters:-
- Operational memoranda.
(List of those to be published has been circulated.)- Training.
- Cover.
- Signal communication.
- Civil Affairs.
- Psychological Warfare.
- Public Relations.
- Press Censorship.
REPORTS
35. You will keep the Supreme Commander informed of the progress of your planning, including transmittal to SHAEF of planning instructions or data supplementary to, but not issued with, your Initial Plan.
By command of General EISENHOWER:
/signed/
W. B. SMITH
Lieutenant General, U.S. Army
Chief of Staff
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DISTRIBUTION
of SHAEF (55) 22
Copy No(s) Allied Naval Commander, Expeditionary Force, 1-3 Commander-in-Chief, 21 Army Group, 4-6 Air Commander-in-Chief, Allied Expeditionary Air Force 7-9 Commanding General, First Army Group, 10-12 The Secretary, Chiefs of Staff Committee, Offices of the War Cabinet, 13 The Secretary, The Admiralty, 14 The Under Secretary of State, The War Office (MO 3), 15 The Under Secretary of State, The Air Ministry, 16 Commanding General, European Theater of Operations, UNITED STATES ARMY (3 copies for Service of Supply), 17-22 Commander-in-Chief, Home Forces, 23 Chief of Combined Operations. 24
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APPENDIX 'A'
to SHAEF (44) 22
dated 10 March, 1944
TABLE 'A' ESTIMATE OF LANDING SHIPS AND CRAFT
AVAILABLE FOR THE ASSAULT
TYPE NUMBERS ESTIMATED SERVICEABLE ON
1st JUNE, 1944REMARKS J4 EASTERN
TASK FORCEWESTERN
TASK FORCETOTAL BR US J S G L O U B (a) (b) (c) (d) (e) (f) (g) (h) (i) (j) (k) (l) LSH - - 1 1 1 - 1 1 - 5 APA & XAP - - - - - - 7 3 - 10 davit lift 16 LSI(L) (i) LSI(L) (ii) - - 3 3 7 - 2 1 - 16 (ii) davit lift
18 LCA typesLSI(M) - - 3 - - - - - - 3 davit lift
8 LCA typesLSI(S) 3 3 - - - - - - - 6 davit lift
8 LCA typesLSI(H) 3 3 12 - - - - - - 18 davit lift
6 LCA typesLCA 42 42 114 60 114 - 36 18 - 426 LCA(HR) - - 18 9 18 9 9 9 9 45 LCS(M) - - 18 9 18 - - - - 45 LCS(S) - - - - - - 24 12 - 36 LCVP - - - - - - 84 36 - 120 LCH - - 4 2 3 - 3 2 1 15 LCI(L) - - 19 28 19 16 18 28 16 144 LCI(S) 32 - - - - - - - - 32 LST(1) - - 3 - - - - - - 3 Capacity: Each, 35 vehicles, [---] personnel LST(2) - - 20 22 22 46 22 21 48 201 LCT(3) - - 20 10 20 50 - - - 100 LCT(4) - - 70 100 90 - - 30 60 350 LCT(5 & 6) - - 20 - - - 110 85 - 215 LCF - - 7 4 7 - 7 4 - 29 LCG(L) - - 7 3 6 - 6 3 - 25 LCT(CB) - - 1 1 1 - 2 - - 5 LCT(A) - - 8 8 16 - 8 8 - 48 LCT(HE) - - 8 - - - 8 - - 16 LCS(L)1 4 - - - - - - - - 4 LCS(L)2 6 4 - - - - - - - 10 LCT(R) - - 9 5 8 - 9 5 - 36 LCP(L) Smoke - - 36 18 36 - 36 18 - 144 LBF - - - - 15 - - - - 15
NOTE:- (i) The figures given above are for planning purposes only, and are subject to amendment. (ii) Assault Group J4 provides the lift for nine commandos and two ranger battalions.
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TABLE 'B' - CRAFT AND BARGES
ALLOTTED FOR FERRY SERVICE
Item Type For use on
BRITISH sectorFor use on
US sectorTotal
serviceable
D dayRemarks (a) (b) (c) (d) (e) 1 LCM(3) 194 198 392 2 LCM(1) 3 LBV(2) 97 87 184 4 LBE 30 20 50 5 LBO 49 32 81 6 LBW 10 6 16 7 LCVP 316 211 527 8 LBK 5 3 8
NOTE:- (i) The LSD will be available for the operation. (ii) Only one half of the net numbers of ferry craft and barges are expected to be working at any one time. (iii) In addition to the craft and barges in Table 'B' above, all LCT (5) and (6) in the assault forces are earmarked for the ferry service.
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APPENDIX 'B'
to SHAEF (44) 22
dated 10 March, 1944
Estimate of Merchant Shipping available MT SHIPPING
1. 224 MT ships can be made available for the operation. In addition, a proportion of the stores coasters (see paragraph 2 below) can be made available to carry MT during the first few days of the operation at the expense of stores tonnages.
STORES SHIPPING
2. The following is the maximum coastal shipping likely to be available for stores:-
No. Type Cargo capacity
at 80 cubic feetTotal cargo
availabilityTotal
Shipping
tonnage80 Small 200 tons 16,000 tons 32,000 tons 130 Medium 450 " 58,500 " 117,000 " 90 Large A
(medium MT)900 " 81,000 " 162,000 " 90 Large B
(large MT)1,750 " 157,500 " 315,000 " 313,000 tons 626,000 tons It is estimated that this shipping will give an average daily lift of 25,000 tons.
3. It will be necessary to release a large proportion of the coasters after the initial phase of the operation. It was originally intended that all except 100,000 tons of coastal shipping should be replaced by ocean-going shipping during the period D plus 30 to D plus 42, but both the period of transition and the coaster tonnage to remain in service are now under review.
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APPENDIX 'C'
to SHAEF (44) 22
dated 10 March, 1944
ESTIMATE OF LAND FORCES AVAILABLE ON 31ST MAY, 1944
(c) US units are assumed to be operationally available thirty (30) days after arrival in the theater.
UNITS US BRITISH AND
CANADIANREMARKS Present
in UKOperation-
all a vail-
able (c)In UK Operation-
all a vail-
ableInfantry divisions 13 12 10 10 Armoured divisions 6 5 5 (a)5 (a) Includes one POLISH armoured division. Airborne divisions 2 2(-)* 2 2 L of C divisions 1 1 Separate parachute regiments 4 4 Tank and armoured brigades 10 (b) 10 (b) Includes one flail brigade, one CDL brigade, two DD brigades, two independent armoured brigades, and four independent tank brigades. Armoured group composite 4 4 Armoured group light 1 1 Commandos 8 8 Ranger battalions 2 2 Independent infantry brigade 1 1 SUMMARY OF UNITS OPERATIONALLY AVAILABLE 31ST MAY, 1944
US BRITISH 19 divisions (-one Parachute RCT) 17 divisions 5 armoured groups 1 L of C division 2 Ranger battalions 10 armored or tank brigades 4 separate parachute regiments 1 independent infantry brigade 8 commandos * The 504 RCT of the 82nd Airborne Division is expected to depart NATO early April for UK. It is not expected to be operationally available by 31st May. NOTE: NO BRITISH formations under War Office of Home Forces are included in above totals.
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APPENDIX 'D'
to SHAEF (44) 22
dated 10 March, 1944
ESTIMATE OF THE AIR FORCES AVAILABLE IN
THE UNITED KINGDOM - 1st JUNE, 1944
Type of squadron U/E A/C
per sqnEstimated
number of
Sqns available
in UK 1st June
1944Possible allocation
of AEAF Sqns to
Operation 'OVERLORD'
1st June, 1944(a) (b) (c) (d) US (Based on US Flow Chart dated
1st January, 1944, 3rd Edition.)Eighth Air Force (Note i) Bomber heavy day 12 165 - Fighter day 25 45 - Photo recce 12 4 - Ninth Air Force Bomber medium 16 32 32 Bomber light 16 12 12 Fighter day 25 (note vi) 63 63 Fighter night 12 3 3 Fighter recce 18 4 4 Photo recce 12 4 4 (Note (ii) Troop carrier 13 52 52 BRITISH Fighter day 18 59 (Note iv) 42 Fighter bomber 18 18 (Note iv) 16 Fighter recce 18 8 (Note v) 5 Fighter night 18 22 (Note iv) 6 Bomber light (a) Bomber Command 20 6 - (b) TAF 18 12 12 Photo recce (4 at 20) 18 8 4 (Note i) Bomber heavy night (Note iii) 20 (Note iii) 72 - 38 Group (Troop carrier) 26
208
28
2British Transport Command 30 5 -
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2.
NOTES: (i) The proportion of the heavy day and night bomber effort to be employed for attacks on targets directly related to the land operations will be decided by the Combined Chiefs of Staff. The Air Commander-in-Chief, Allied Expeditionary Air Force, will advise the Supreme Commander on the employment of the allotted effort and will be responsible for passing requirements in this connection to the US and BRITISH Heavy Bomber Commands. (ii) Including four troop carrier groups transferred from NAAF. (iii) Figures are an equivalent based on anticipated total number of aircraft. Some squadrons may have more that 20/U/E. Reduced expansion of total number of squadrons available, from 74 to 721/2, is due to increased wastage and increased requirements for Halifax aircraft for 38 Group and for overseas. (iv) May be augmented by a maximum of nine fighter and two fighter/bomber squadrons from ADGB. In addition two night fighter squadrons are held in reserve. (v) In addition two squadrons of Hurricane IVs and one squadron of Spitfire Vs (F/R) are held in reserve. (vi) Includes three fighter groups from the MEDITERRANEAN. (vii) A further eight fighter squadrons have been asked for.
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APPENDIX 'E'
to SHAEF (44) 22
dated 10 March, 1944
ESTIMATE OF AIR LIFT FOR AIRBORNE FORCES LIKELY
TO BE AVAILABLE ON 1 JUNE 1944
1. AIRCRAFT U/E A/C Initial
LiftImmediate
ReserveTactical
Reserve(A) US IX TROOP CARRIER COMMAND
(Based on AGWAR Message R
9669/F314 of 19 February, 1944)131/2 Groups Dakotas (a) 986 (b) 810 176 - (B) 38 GROUP 4 Squadrons Albemarles 104 88 16 - 4 Squadrons Stirlings 104 88 16 - 2 Squadrons Halifax 40 36 4 - (C) BRITISH TRANSPORT COMMAND 5 Squadrons Dakotas 150 (b) 135 15 - TOTAL 1384 (c) 1157 227 - 2. GLIDERS CG-4A Horsa Hamilcar (A) IX Troop Carrier Command 2000 400 - (B) 38 Group - 850 50 TOTAL 2000 1250 50 3. GLIDER PILOTS CG-4A
or
HorsaCG-4A Horsa Hamilcar (A) IX Troop Carrier Command 676 676 - - (B) 38 Group - - 1170 60 TOTAL (d) 676 (d) 676 (d) 1170 (d) 60
NOTES: (a) This total includes 200 additional aircraft and crews made available by augmenting the strength of US Groups from 52 to 73 aircraft and crews per group. (b) Dakotas can carry normal load and two one CG-4A, or part load and tow one Horsa. (c) Total available lift capacity is dependent entirely upon airborne plan and the combinations of paratroop transports, tugs and gliders selected. (d) A glider normally carries a crew of two pilots.
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APPENDIX 'F'
to SHAEF (44) 22
dated 10 March, 1944
ADMINISTRATIVE FUNCTIONS OF SUPREME HEADQUARTERS First Phase - Command of ground forces vested in 21 Army Group
SHAEF will:-
- Prepare outline administrative plans for future allied operations.
- Co-ordinate as necessary both inter-service and inter-allied administrative policy.
- Allocate material resources in short supply until shipped overseas.
- Make representation to UNITED STATES Departments or BRITISH Ministries concerning policy and material requirements whenever these influence the theater as a whole.
- Deal on policy matters with other national authorities.
- Co-ordinate policy as to requisitioning and purchasing in the theater of operations, including policy as to hiring of labour and policy as to allocation of local resources.
- Determine policy in POL [Petroleum-Oil-Lubricants] matters; approve POL plans from the long-term viewpoint; and allocate as necessary POL products.
- Co-ordinate as may be necessary plans and construction of airfields.
- Co-ordinate policy on discipline, honours and awards, welfare and health.
- Co-ordinate policy concerning prisoners of war.
- Co-ordinate movement policy as a whole so as to ensure optimum use of available facilities including:-
- Shipping routes and requirements.
- Combined movement policy in the overseas theater as a whole.
- Policy as to port and rail development in the overseas theater as a whole.
- Movement policy for Civil Affairs.
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