Antioch

Also, not quite a siege, more of an 'escape from the jaws of defeat' kind of thing. Syria, several thousand years ago. Four Egyptian divisions in a marching column -first one sets up camp, second one gets jumped and routed by a Hittite army. Last two divisions too far away to help. Pharoah leads personal guard and entourage in a series of desperate charges - and with the help of a supporting column coming from the coast, drives the Hittites over the river. I am, of course, talking about Kadesh.