Memorandum by Prime Minister Churchill
Cairo, 25 November 1943
Most secret
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The difficulties and short-comings in our conduct of the war since the Battle of Salerno have arisen from divergencies of view between our two Staffs and Governments. It is not seen how these divergencies would be removed by the appointment of a Supreme Commander working under the Combined Chiefs of the Staff and liable to have his decisions reversed by them. The divergencies, which are political as much as military, would still have to be adjusted by the present methods of consultation between the Combined Staffs and the Heads of the two Governments. Thus, the Supreme Commander, after being acclaimed as the world war-winner, would in practice find his functions restricted to the narrow ground between the main decisions of policy and strategy which can only be dealt with by the present methods, and the spheres of the two chief regional Commanders.
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This would certainly not be sufficient to justify arousing all the expectations and setting up all the apparatus inseparable from the announcement of a “Supreme Commander for the defeat of Germany.”
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On the other hand, if the power of decision is in fact accorded to the Supreme Commander, the work of the Combined Chiefs of the Staff would be virtually superseded and very great stresses would immediately arise between the Governments and the Supreme Commander. Without going into personalities, it is greatly to be doubted whether any single officer exists who would be capable of giving decisions over the vast range of problems now dealt with by the Heads of Government assisted by the Combined Chiefs of the Staff.
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The principle which should be followed as far as possible between Allies of equal status is that the Command in any theatre should go to the Ally who has the largest forces deployed or about to be deployed there. On this it would be natural that the Command in the Mediterranean should be British and that the Command of OVERLORD should be American. Such Commands would also correspond with the outlook of the two Governments, the Americans regarding OVERLORD of overwhelming importance, while the British believe that the greatest and most immediate results can be obtained in the Mediterranean and that OVERLORD is a knock-out blow, the timing of which must be settled in relation to the condition and dispositions of the enemy.
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If the two Commands are merged under a Supreme Commander, the British would have available against Germany in May decidedly larger forces than the United States. It would therefore appear that the Supreme Command should go to a British officer. I should be very reluctant, as Head of His Majesty’s Government, to place such an invidious responsibility upon a British officer. I have very little doubt that he would concentrate his main effort on the Mediterranean and treat the OVERLORD sphere as a highly important but none the less residuary legatee. This point of view would certainly not be accepted by the Government or Staff of the United States. If, on the other hand, disregarding the preponderance of forces involved, the Supreme Command was given to a United States officer and he pronounced in favour of concentrating on OVERLORD irrespective of the injury done to our affairs in the Mediterranean, His Majesty’s Government could not possibly agree. The Supreme Commander, British or American, would therefore be placed in an impossible position. Having assumed before the whole world the responsibility of pronouncing and being overruled by one Government or the other, he would have little choice but to resign. This might bring about a most serious crisis in the harmonious and happy relations hitherto maintained between our two Governments.
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It is not seen why the present arrangement should not continue, subject to any minor improvements that can be suggested. Under this arrangement, an American Commander would conduct the immense Operation OVERLORD and a British Commander would conduct the war in the Mediterranean, their action being concerted and forces assigned by the Combined Chiefs of the Staff working under the Heads of the two Governments. Regular periodic conferences should be held at Gibraltar between the two Commanders, at which they could adjust minor differences about the movement of units, landing-craft etc., so as to help each other as much as possible, and they should also prepare together the timing and concert of their respective operations. More frequent meetings of the Combined Chiefs of Staff should also be arranged, and possibly visits of one weeks’ duration by the Chairman of each Chiefs of Staff Committee alternately to London and Washington.