Did Zachary Taylor have a nickname?

Zachary Taylor did indeed have a nickname: "Old Rough and Ready." He acquired it during his service as an army officer during the Second Seminole War, a long and bitter conflict between the United States Army and the Seminole tribe of modern-day Florida.
A career soldier, Taylor had earned the loyalty of his men by sharing in their hardships, always a sure-fire way for an officer to gain popularity. It was through such willingness to experience the privations of front-line troops that Taylor gained his famous nickname, one that stayed with him throughout the remainder of his long, illustrious military career, as well as his brief career in politics. Unfortunately for "Old Rough and Ready," his political career didn't last for very long, as he died in office just over a year after entering the White House as the twelfth president of the United States.