History of georgian kings Part.3 David The Builder IV

In 1105, the Seljuks mobilized a large coalition against King David but were routed at Ertsukhi. Over the next 15 years, King David pursued an aggressive expansion throughout southern Transcaucasia, capturing the key fortresses of Samshvilde, Dzerna, Rustavi, Kaladzori, Lore, and others. A number of Seljuk invasions between 1110 and 1116 were defeated. From 1118 to 1120, King David launched a major military reform, which sought to reduce the king's dependence on the troops supplied by feudal lords and increase the royal authority. Married to the daughter of the chief of the powerful Cuman-Qipcaq tribe residing in the northern Caucasus, David invited entire tribe, which was engaged in a bitter war with the rising Russian principalities, to resettle to Georgia in 118.