This letter to Admiral Cunningham was dated 21 April 1943.
I promised V.C.I.G.S. that Major Martin would arrange with you for the onward transmission of a letter he has with him for General Alexander. It is very urgent and very "hot" and as there are some remarks in it that could not be seen by others in the War Office, it could not go by signal. I feel sure that you will see that it goes on safely and without delay.
I think you will find Martin the man you want. He is quiet and shy at first, but he really knows his stuff. He was more accurate than most about the probable run of events at Dieppe and he has been well in on the experiments with the latest barges and equipment which took place up in Scotland.
Let me have him back, please, as soon as the assault is over. He might bring some sardines with him - they are "on points" here!