Siege is the 24th main quest after Night Raid. Talmberg remains under Istvan's control after failed attacks. Quest begins automatically after final cutscene
Warfare expands realm through force using armies and Casus Belli. Cannot declare war while in debt or with armies raised. Vassals leaving war lose control of their lieges' territories. Allies gain prestige regardless of war outcome. Winners gain legitimacy based on title rank difference
Requires at least 150 troops and enemy faction. Build siege camp before starting siege. Build Trebuchet first to destroy castle defenses
Siege warfare is necessary to conquer provinces. Fortresses automatically liberate adjacent provinces and block enemy movement. Fortress defense increases monthly by 1%+@
Siege requires high Engineering skill and ample supplies. Siege camp must be built before developing siege weapons. Enemy factions can also siege player's settlements