Government Code and Cypher School: Signals Intelligence Passed to the Prime Minister, Messages and Correspondence

A.M. FORM No. 1479 TOP SECRET ULTRA TO BE KEPT UNDER LOCK AND KEY AND NEVER TO BE REMOVED FROM THE OFFICE. THIS FORM IS TO BE USED FOR AIR INTELLIGENCE MESSAGES ONLY. NR. No. GR. No. OFFICE SERIAL No. TIME OF TIME OF DATE RECEIPT DESPATCH SYSTEM TO: FROM: SENDERS No. CX/MSS/T326/13. WEST EUROPE. ((1)) FROM NAVAL LIAISON OFFICER, C. IN C. WEST, TO NAVAL GRUPPE WEST, OPS. STAFF ON EVENING OF 2/10: GROUND SITUATION. NORTH: OWN BRIDGEHEAD EAST OF WAGENINGEN ((E 57)) MADE FIRM. OWN ATTACK SOUTH OF ARNHEM GAINED LITTLE GROUND.