Georgian king David IV Bagratiopni - "the Builder" , one of the greatest medieval king and commander, who won every battle in his life !
David defeated one of them great mislim coalition in the history and coalition leader Artuqid Najm al-din El-ğazi
http://en.wikipedia.org/wiki/David_the_Builder
http://en.wikipedia.org/wiki/Battle_of_Didgori
battle of didgori was important point first crusader wars , in war between Christian and Muslim world in I quarter of XII c.
If Georgians (David the Builder) would not win battle, muslim coalition army of Jihad would take again Jerusalem and would destroy the first wave of crusaders in the near east very easily!