In 1821 Ottoman armies occupied Greece and at one point when the Greeks attacked the Turks were forced to hole up in the Acropolis. From the height of the Acropolis, the Turks fired down at the Greeks until suddenly they ran out of ammunition. They decided to knock down the temple columns to get at the lead cores and foundation joints to make bullets. The Greeks upon hearing this were horrified that a sacred temple was being destroyed and for ammunition even. To prevent this the Greeks sent their own ammunition up to the Turks and the battle was resumed. [According to _The_Book_of_Lists_II_ this is unconfirmed but possibly true.]
(From the "Rest" of RHF)