Nanda Empire
Ancient Indian kings certainly valued the elephant in war, some stating that an army without elephants is as despicable as a forest without a lion, a kingdom without a king, or as valor unaided by weapons. The use of elephants further increased with the rise of the Mahajanapadas. King Bimbisara (c. 543 BC), who began the expansion of the Magadha kingdom, relied heavily on his war elephants. The Mahajanapadas would be conquered by the Nanda Empire under the reign of Mahapadma Nanda. Pliny the Elder and Plutarch also estimated the Nanda Army strength in the east as 200,000 infantry, 80,000 cavalry, 8,000 chariots, and 6,000 war elephants. Alexander the Great would come in contact with the Nanda Empire on the banks of the Beas River and was forced to return due to his army's unwillingness to advance. Even if the numbers and prowess of these elephants were exaggerated by historic accounts, elephants were established firmly as war machines in this period.