On 17 August 1942, the clue "French port (6)" appeared in the "Daily Telegraph" crossword (compiled by Leonard Dawe), followed by the solution, "Dieppe"; the raid on Dieppe took place the next day, on 19 August. The War Office suspected that the crossword had been used to pass intelligence to the Germans and called upon Lord Tweedsmuir, a senior intelligence officer attached to the Canadian Army, to investigate. Tweedsmuir later said, "We noticed that the crossword contained the word 'Dieppe', and there was an immediate and exhaustive inquiry which also involved MI5. But in the end, it was concluded that it was just a remarkable coincidence—a complete fluke". A similar crossword coincidence occurred in May 1944, prior to D-Day. Multiple terms associated with Operation Overlord (including the word "Overlord") appeared in the "Daily Telegraph" crossword (also written by Dawe) and after another investigation by MI5 which concluded that it was another coincidence. Further to this, a former student identified that Dawe frequently requested words from his students, many of whom were children in the same area as US military personnel.