The phrase "factional fighting" is correct and can be used in written English.
It refers to conflicts or disputes between different groups within a larger organization or society. It can be used to describe political, religious, or social divisions and tensions that lead to violence or conflict. Example: The country was torn apart by factional fighting between the two main political parties, causing instability and chaos.
Some of the violence is factional fighting between Hamas and Fatah, or among Fatah's increasingly divided sub-factions.
It has touched off a wave of factional fighting.
Now the government is sitting on massive cash reserves which have already become the object of factional fighting.
Factional fighting continued, and, when the Taliban militia took over the capital, Kabul, in 1996, they summarily executed Najibullah.
Still, at least one Tajik fighter expressed hope that there would not be a resumption of factional fighting.
Muhammad's father worked for the Western-backed Palestinian Authority security forces before Hamas routed them during factional fighting more than a decade ago.
Factional fighting within the Justicialist Party led to a split, and Menem contested the 2003 presidential election against two other Justicialist candidates as well as candidates from other parties.
The deaths raised fears of a possible round of revenge killings and renewed factional fighting between Hamas and Fatah after two weeks of relative calm.
A former governor of Herat, Mr. Khan, an ethnic Tajik, ruled peacefully after the Soviet pullout in 1989, while the rest of Afghanistan was gripped by factional fighting.
As defence minister from 1959 to 2008, Raúl set up and led Cuba's formidable armed forces.When Raúl took over from Fidel, he moved slowly at first, amid factional fighting.
The schism between the Palestinian sides deepened after Hamas won parliamentary elections in 2006 then seized full control of Gaza a year later, routing pro-Fatah forces after months of factional fighting.
