Van Johnson's dazzling smile, shock of red hair, and suntanned freckled cheeks made him a movie-star icon. Among teenaged girls in the 1940s, he was popularized as the bobbysoxer's heartthrob.

He won the nation's heart, too, by appearing in a series of blockbuster war films--A Guy Named Joe, Thirty Seconds Over Tokyo, Weekend at the Waldorf, and Battleground. Perennially a leading man opposite June Allyson, Esther Williams, Judy Garland, and Janet Leigh, he rose to fame radiating the sunshine image Metro-Goldwyn-Mayer chose for him, that of an affable,...