Arthashastra
कवचिनो रथा आवरणिनः पत्तयश् च चतुर् अङ्ग बलस्य प्रतिबलम् ॥
Men , clad in armour, chariots, men possessing defensive weapons, and infantry can oppose an army consisting of all the four constituents (elephants, chariots, cavalry and infantry).
english translation
kavacino rathA AvaraNinaH pattayaz ca catur aGga balasya pratibalam ॥
hk transliteration by Sanscript