His wife, Eileen, tells the Los Angeles Times ( http://lat.ms/109j8tA) that Baum died on March 3 at his San Diego home.
Baum was a 23-year-old captain when Patton ordered him to liberate the camp deep in Germany weeks before the war's end. Patton's son-in-law, Lt. Col. John Knight Waters, was there—although Patton later denied that prompted his order.
Twenty-five men were killed and 32 others, including Baum, were wounded. Allied soldiers liberated the camp days later.
Historians call the raid ill-conceived and unnecessary but the tactics are still studied.
Baum later had a career in the garment industry.
Information from: Los Angeles Times, http://www.latimes.com