Book 10, Samgramika, of the Arthashastra—attributed to Kautilya (Chanakya), advisor to Chandragupta Maurya in the 4th–3rd century BCE—is a compact, artful manual of war. It prescribes mobilization and army organization (infantry, cavalry, elephants), siegecraft, battlefield tactics, camp discipline, logistics, intelligence and spies, use of terrain, and the seamless pairing of diplomacy with force. Central themes are preparation, deception and counter-deception, morale and discipline, and the economic underpinnings of sustained conflict. Written as pragmatic statecraft, its detailed guidance on reconnaissance, supply chains and covert action still informs modern military strategy, intelligence practice and national-security planning—offering enduring insights into the interplay of force, information and governance.