Story of Hazrat Khalid bin waleed RA

Khalid ibn al-Walid ibn al-Mughira al-Makhzumi was a 7th-century Arab military commander. He initially headed campaigns against Muhammad on behalf of the Quraysh. He later became a Muslim and spent the remainder of his career in service to Muhammad and the first two Rashidun caliphs: Abu Bakr and Umar.