Complex sentence: After eloping, Jerry, who was in the Navy, was shipped out for World War II. In his absence, Eileen became photographer Elliot Clark's secretary, then later a fashion stylist, copywriter, and fashion reporter for the "Tobe Report".
Split into simpler sentences: After eloping, Jerry, who was in the Navy, was shipped out for WWII. While Jerry was gone, Eileen became photographer Elliot Clark's secretary, a fashion stylist, a copywriter, and a fashion reporter for the "Tobe Report".