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U. S. SECRET BRITISH MOST SECRET C.O.S.S.A.C. (43) 28. ANNEX B OPERATION "OVERLORD." The Secretary, Chiefs of Staff Committee, Offices of the War Cabinet. 15th July, 1943 1. In my original Directive (C.O.S. (43) 215 (O) ) I was charged with the duty of preparing a plan for a full scale assault against the Continent in 1944 as early as possible. 2. This part of my Directive was subsequently amplified (see C.O.S. (43) 113th Meeting (O), Item 4), in that I was ordered to submit an outline plan for an assault, with certain specified forces, on a target date the 1st May, 1944, to secure a lodgement on the Continent from which further offensive operations can be carried out. It was indicated to me, in the course of this amplification, that the lodgement area should include ports that, suitably developed, could be used by ocean-going ships for the build-up of the initial assault forces from the United Kingdom, and for their further build-up with additional divisions and supporting units that might be shipped from the United States or elsewhere. 3. I have the honour now to report that, in my opinion, it is possible to undertake the operation described, on or about the target date named, with the sea, land and air forces specified, given a certain set of circumstances in existence at that time. 4. These governing circumstances are partly within our direct control and partly without. Those within our control relate first to the problem of beach maintenance, and secondly to the supply of shipping, naval landing craft and transport aircraft. Wherever we may attempt to land, and however many ports we capture, we cannot escape the fact that we shall be forced to maintain a high proportion of our forces over the beaches for the first two or three months while port facilities are being restored; and that, in view of the variability of the weather in the Channel, this will not be feasible unless we are able rapidly to im- provise sheltered anchorages off the beaches. New methods of overcoming this problem are now being examined. There is no reason to suppose that these methods will be ineffective, but I feel it my duty to point out that this operation is not to be contemplated unless this problem of prolonged cross-beach main- tenance and the provision of artificial anchorages shall have been solved. 95

Document source description

This volume on the Quadrant Conference includes the papers and minutes of Combined Chiefs of Staff meetings 106 to 116. These were held from August 14 to 24, 1943, in Quebec at the Chateau Frontenac. Also included in the conference were two meetings at the Citadel of Quebec, attended by President Franklin D. Roosevelt and British Prime Minister Winston Churchill on August 19 and 23, 1943. A wide range of topics were presented including various aspects of the war against Japan and Operation Overlord.

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    "ocrText": "U. S. SECRET\nBRITISH MOST SECRET\nC.O.S.S.A.C. (43) 28.\nANNEX B\nOPERATION \"OVERLORD.\"\nThe Secretary,\nChiefs of Staff Committee,\nOffices of the War Cabinet.\n15th July, 1943\n1. In my original Directive (C.O.S. (43) 215 (O) ) I was charged with the\nduty of preparing a plan for a full scale assault against the Continent in 1944\nas early as possible.\n2. This part of my Directive was subsequently amplified (see C.O.S. (43)\n113th Meeting (O), Item 4), in that I was ordered to submit an outline plan for\nan assault, with certain specified forces, on a target date the 1st May, 1944,\nto secure a lodgement on the Continent from which further offensive operations\ncan be carried out. It was indicated to me, in the course of this amplification,\nthat the lodgement area should include ports that, suitably developed, could be\nused by ocean-going ships for the build-up of the initial assault forces from the\nUnited Kingdom, and for their further build-up with additional divisions and\nsupporting units that might be shipped from the United States or elsewhere.\n3. I have the honour now to report that, in my opinion, it is possible to\nundertake the operation described, on or about the target date named, with the\nsea, land and air forces specified, given a certain set of circumstances in\nexistence at that time.\n4. These governing circumstances are partly within our direct control and\npartly without. Those within our control relate first to the problem of beach\nmaintenance, and secondly to the supply of shipping, naval landing craft and\ntransport aircraft. Wherever we may attempt to land, and however many ports\nwe capture, we cannot escape the fact that we shall be forced to maintain a high\nproportion of our forces over the beaches for the first two or three months while\nport facilities are being restored; and that, in view of the variability of the\nweather in the Channel, this will not be feasible unless we are able rapidly to im-\nprovise sheltered anchorages off the beaches. New methods of overcoming this\nproblem are now being examined. There is no reason to suppose that these\nmethods will be ineffective, but I feel it my duty to point out that this operation\nis not to be contemplated unless this problem of prolonged cross-beach main-\ntenance and the provision of artificial anchorages shall have been solved.\n95"
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