"Occupation Duty" is a short alternate history story by Harry Turtledove, published in Time Twisters, (eds. Jean Rabe and Martin H. Greenberg), DAW 2007; and in Atlantis and Other Places, NAL/Roc, December, 2010. It posits a world where the Philistines' champion Lord Goliath defeated the Israelites' champion Tabitas (David) in ancient days - with the ultimate result that the Philistines remained a distinct political power in the land up to the equivalent of the 21st Century, when they posses modern civil and military technology.