From Wikipedia

Elsie Janis (March 16, 1889 – February 26, 1956) was an American singer, songwriter, actress, and screenwriter. Entertaining the troops during World War I immortalized her as "the sweetheart of the AEF" (American Expeditionary Force). Janis was a tireless advocate for British and American soldiers fighting in World War I. She raised funds for Liberty Bonds. Janis also took her act on the road, entertaining troops stationed near the front lines - one of the first popular American artists to do so in a war fought on foreign soil. Ten days after the armistice she recorded for HMV several numbers from her revue Hullo, America, including Give Me the Moonlight, Give Me the Girl.

She wrote about her wartime experiences in The Big Show: My Six Months with the American Expeditionary Forces (published in 1919), and recreated them in a 1926 Vitaphone musical short, Behind the Lines. A new musical about this period of her life called "Elsie Janis and the Boys", written by Carol J. Crittenden and composer John T. Prestianni, premiered as part of the Rotunda Theatre Series in the Wortley-Peabody Theater in Dallas, TX on August 15, 2014. Her final film was the 1940 Women in War co-starring Wendy Barrie and Peter Cushing.

Elsie Janis died in 1956 at her home in Beverly Hills, California, aged 66, and was interred in the Forest Lawn Memorial Park Cemetery in Glendale, California. For her contribution to the motion picture industry, Elsie Janis has a star on the Hollywood Walk of Fame at 6776 Hollywood Blvd.