Willie Gillis, one of Norman Rockwell's trademark characters, debuted on the cover of The Saturday Evening Post.

Willie Gillis, Jr. is a fictional character created by Norman Rockwell for a series of World War II paintings that appeared on the covers of 11 issues of The Saturday Evening Post between 1941 and 1946. Gillis was an everyman with the rank of private whose career was tracked on the cover of the Post from induction through discharge without being depicted in battle. He and his girlfriend were modeled by two of Rockwell's acquaintances.

Norman Percevel Rockwell was an American painter and illustrator. His works have a broad popular appeal in the United States for their reflection of the country's culture. Rockwell is most famous for the cover illustrations of everyday life he created for The Saturday Evening Post magazine over nearly five decades. Among the best-known of Rockwell's works are the Willie Gillis series, Rosie the Riveter, the Four Freedoms series, Saying Grace, and The Problem We All Live With. He is also noted for his 64-year relationship with the Boy Scouts of America (BSA), during which he produced covers for their publication Boys' Life, calendars, and other illustrations. These works include popular images that reflect the Scout Oath and Scout Law such as The Scoutmaster, A Scout Is Reverent, and A Guiding Hand.

The Saturday Evening Post is an American magazine published six times a year. It was published weekly from 1897 until 1963, and then every other week until 1969. From the 1920s to the 1960s, it was one of the most widely circulated and influential magazines among the American middle class, with fiction, nonfiction, cartoons, and features that reached two million homes every week.