He is remembered for the 13th day of Kurukshetra war. On the 13th day, he penetrated the inpenetrable Chakra Vyuha (constant rotating circular formation) of the Kourava army and killed thousands of Kourava warriors. He managed to defeat foremost Kourava warriors like Drona, Shalya, Karna, Kripa, Ashwatthama and Duryodhana. Warrior races? How about the Gurkhas (Nepalese)? The British invaded Nepal in 1814, and less than 12,000 Gurkhas were able to hold off 39,000 british troops for 3 years.
The British were so impressed that they have ever since hired them to serve in the British military. In WWII their guerrilla tactics gave the Japanese a lot of trouble in Malaysia. I also have to add the British, mostly because they shouldn’t be left out. Their armies have some impressive achievements, but up until the end of WWI the Royal Navy was the most dominant military force the world had ever known. The Royal Navy is responsible for the downfalls of such figures as Louis XIV, Napoleon, the African Slave Trade, Spain (yes, Spain), the Argentine Junta, and many more.