He was a military commander and strategist in early Islam who played a key role in the spread of Islam and the expansion of the Muslim empire. Here are some of his accomplishments,
Before converting to Islam
Khalid fought against Muslims in the battles of Badr, Uhud, and Khandaq. He was a member of the Quraysh's Banu Makhzum clan, which opposed Muhammad.
Conversion to Islam
Khalid converted to Islam in the presence of Muhammad, who gave him the title of Sayf Allah, which means "Sword of God".
Military campaigns
Khalid led the Muslim army in the Battle of Mu'ta, the Muslim conquest of Mecca, and the Battle of Hunayn. He also recaptured provinces that were breaking away from Islam after Muhammad's death.
Legacy
Khalid's life is considered a model for leading by example, embracing change, and balancing strength with compassion.