A siege is a military tactic where an army surrounds a fortified place, like a castle or city, to cut off supplies and force surrender. The goal is to weaken the defenders over time, making it difficult for them to receive food, water, or reinforcements. Famous sieges, such as the Siege of Vicksburg during the American Civil War, show how effective this strategy can be. During a siege, attackers may use various methods, including catapults or battering rams, to breach walls. Defenders often try to hold out as long as possible, using their resources wisely. Ultimately, a successful siege can change the course of a war, leading to new power dynamics.