Kshatriya Dharma : THE WARRIORS 'S VEDIC MORAL CODE.

Those who have read Kshatriya Dharma will know. The code of ethics to be strictly followed by Hindu warriors in history. "1) To attack only those who consider themselves as combatants. 2) To never hurt anyone who does not wish to fight, and doing so will be a matter of grave dishonour. 3) To not attack anyone from behind, or with surprise, or someone who is fallen to the ground. 4) To never attack someone who has already surrendered. 5) A person will never attack someone who ...has lost his weapons and will wait for him to get his weapons back, 6) or is not equally matched i.e. horseman to a horseman, infantry to infantry. 7) Under no circumstances, in a war, will trees be harmed, or non-combating women and children. 8 ) At sunset, both armies must immediately withdraw to continue next morning. Night must be given to tend to the wounded. 9) Through despicable means, will no one achieve victory." While other so-called 'civilizations' (like Sun Tzu of China) teach how to attack unexpectedly and win with deceit, only the most sophisticated society could have rules as lofty as these that were followed for millennia.
Now ofcourse, you could argue that's why deceit of the mlecchas defeated the Hindus, but it is worth thinking about what do you consider more valuable - gaining treacherous victory or death while following Dharma to the letter. The answer is quite obvious.