On the subject of very tall people, here are some fun facts about giants from The Encyclopedia of Trivia
Frederick William I ((1688 – 1740), the father of Frederick the Great, had a famous private guard company called the Potsdam Grenadiers. He would bribe, buy or even kidnap any man close to seven feet high to get them for the Grenadiers. Frederick made the giant men marry giant woman so he could "raise" his own giants.
Adam Rainer (1899-1950) was just over 3'10 tall at the age of 21. He then starting growing and was 7'8 by the time he died, the only man in history be classified as both a dwarf and a giant.
The tallest man in the world, Robert Wadlow, was 8 feet eleven inches tall. He died at the age of 22, in 1949, due to an infection caused by leg braces he needed to be able to stand on his feet.
In 1965, Andre the Giant received a draft notice for the French peace time army, but was unable to join as there were no shoes big enough, bunks long enough, or trenches deep enough to accommodate him.