Battle of Yarmouk

Khalid's tactical brilliance led a smaller Muslim force to a stunning victory against the larger Byzantine army at the Battle of Yarmouk, reshaping the region's history. Despite his success, concerns over his independent actions and popularity prompted the new caliph to relieve him of command. Khalid's undefeated record in over a hundred battles solidified his status as one of history's greatest generals, leaving a legacy that influenced military strategies for generations.