Answer
Khalid ibn al-Walid was the military leader during the Battle of Hunayn, which was a decisive victory for the Muslims over the pagan Arab tribes. The battle took place in 630 AD and was fought at Hunayn, a valley in the Hejaz region of Arabia. The Muslims, led by Khalid ibn al-Walid, were outnumbered by the pagan Arabs, but they were victorious due to their superior tactics and fighting skills.