 Together with his father, they led about 100 Spanish soldiers while Francisco Pizarro, the leader of the expedition, went south, capturing the Sapa Inca Atahualpa in the Battle of Cajamarca, defeating 5,000 natives with only 167 Spaniards.Atahualpa had originally had 80,000 soldiers by his side, but was not cautious and set out with 5,000 men.El Mozo and his father, Diego, went to Cajamarca in 1533, but they received no gold for the capture and pressed to get the Incas executed, which finally happened on July 26.