That means, if you decide to engage one of these faction’s armies in battle you are likely to start a war with the entire faction. At the start of the game, if you have not allied with any of the factions present within Bannerlord, chances are every other clan and faction on the map will be neutral towards you. You can see as indicated by the color when you hover over a party, whether they are currently hostile or friendly towards your clan. Go after smaller parties first to secure some prisoners in Bannerlord