Kearny was a seasoned fighter, having gained significant combat experience during his service in Mexico as a cavalry captain. He had once expressed a desire to lead a cavalry charge, demonstrating his youthful passion for battle. Shortly after expressing this ambition, he had the opportunity to fulfill it but at a high cost, leading a charge that resulted in the loss of his left arm.

Despite this serious injury, Kearny maintained his sense of humor and pragmatism. He reportedly advised his servant about the difficulties of losing an arm, humorously noting how challenging it would be to wear a glove. This quote reflects Kearny's resilient spirit and his ability to cope with the harsh realities of war while also highlighting the personal sacrifices made by soldiers.