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Martial arts expert Keiko Wakabayshi, nicknamed the "Samurai Granny", has been hired by the country's military to train recruits in hand-to-hand combat.
Miss Wakabayshi, who stands exactly 5ft tall, looks tiny compared to her charges who are mostly over 6ft.
But the pensioner is a trained master in an array of martial arts disciplines including jujitsu, jojitso, kenjitso, judo, kendo and karate.
More at Telegraph.co.uk