In the 1960s, when I was serving in the Army, a fellow NCO who lived in the same mess as me gave birth, insisting she did not know she was pregnant. She certainly didn't look pregnant (she was not overweight but what was termed, I think, "big boned"!) even in uniform, which was fairly close fitting. None of us had the slightest idea she was. She began having stomach pains one evening and it got so bad we sent for the duty medical orderly, who promptly gave her aspirin and told her to go to bed! She got worse and worse until the medical officer came and announced that she was in the end stages of labour and dashed her off to hospital where she gave birth to a seven poundish baby boy. I and my fellow mess members were quite stunned by the whole thing, realising that none of us would have known what to do if she had actually had this baby in-situ, as it were (and we were considered to be an intelligent bunch!). There was much discussion about towels and hot water but no-one had the slightest idea what they were for! We didn't have much that could have passed for maternal education in those days! She had to leave the Army as, in those days, mothers, married or otherwise, were not catered for. It is, I believe, different these days. You are allowed to continue to serve if you become a mother. I hope she and her then fiancee are now contented grandparents!