A gang can stake claim over as many as 3 turfs. Any other gang can challenge this claim. Once a challenge is made, war starts in one hour. The rules of Turf war are a bit different from normal war. Each Turf has its own rule of war.
Turf wars have a weighted point system: a win can give a maximum of 10 points and kill can give maximum of 20 points, both based on the level difference between the two opponents. The war lasts for 1 hour and if the challenger is not able to defeat the owner of turf, the turf stays with the current gang. If a gang is holding multiple turfs, it will likely have to defend those turfs from multiple gangs.