Turf war

Turf war is a colloquial term for "a bitter struggle for territory, power, control, or rights". For example: a turf war erupted between street gangs; the president's resignation was the result of a turf war with the board of directors. In larger companies, turf wars can break out due to improper management further up the corporate hierarchy. It can also be described as contention for any resource between two or more parties, resulting in confrontation. The phrase may have originated in the American West, where cow herders and sheep herders fought over grazing turf.