Gang Warfare in The Lost and Damned
Obviously there are several fights throughout the game with other gangs such as the Angels of death. But even after you have completed the storyline there are "gang wars" to do. These are side missions, you have to go to a place on your map and go there. Once you are there 3 bikers will turn up from the lost mc to help you. There are different scenarios such as taking out multiple vehicles or taking out a safehouse.