The Arthaśāstra of Kauṭilya, composed around the fourth century BCE, is one of the earliest and most important treatises on statecraft, administration, diplomacy, and military science in ancient India. It presents detailed principles of governance, security, intelligence, and warfare. Among its military concepts, Durga-vijaya (siege warfare) occupies an important place. Kauṭilya explains the construction, defence, and capture of forts through careful planning, intelligence gathering, diplomacy, espionage, blockade, and psychological warfare. He classifies forts according to their geographical features and emphasizes the importance of strong fortifications, proper resource management, and coordinated military operations for achieving victory. He also recommends the use of secret agents, deception, and alliances to weaken the enemy before launching a direct attack, showing a practical and systematic approach to warfare. The present paper examines the principles of siege warfare described in the Arthaśāstra and compares them with references from the epics and classical literature. It highlights the continuity of military thought preserved in classical Sanskrit literary texts.