I haven't seen this film for years, but on an episode of "This is your Life" which I think was devoted to Lionel Jeffries he told the story that during the making of this film as he was meant to be pole vaulting out of a maze, during one of the intelligence tests set for the soldiers. he casually mentioned he wanted some sort of war cry to make his jump more dramatic, one of the other actors "helpfully" suggested the "old gaelic war cry" of Pogue Mahone! which Jeffries used,shouting it loudly as he vaulted, not knowing what it meant. Apparently this went unnoticed except where they speak gaelic and which brought the house down when the film was shown in Ireland and Scotland, (it translates as "kiss my ****")