Fought 440 years ago on October 7, 1571 it is also the cause of a great poem by one of the most conservative poets of the twentieth century, G. K. Chesterton, published 100 years ago, in 1911 (well, not to the day).
Cervantes on his galley sets the sword back in the sheath
(Don John of Austria rides homeward with a wreath.)
And he sees across a weary land a straggling road in Spain,
Up which a lean and foolish knight for ever rides in vain,
And he smiles, but not as Sultans smile, and settles back the blade....
(But Don John of Austria rides home from the Crusade.)