The Outdoor Girls in the Army, or Doing Their Bit for The Soldier Boys is a novel by Laura Lee Hope, originally published in 1918. It is the eighth book in the Outdoor Girls series. The story follows the adventures of four teenage girls, Betty, Mollie, Grace, and Amy, as they volunteer to help with the war effort during World War I. They become part of the Girl Scouts, and their main task is to help entertain and support the soldiers who are stationed at a nearby army camp. The girls work hard to plan and organize events and activities for the soldiers, including dances, games, and concerts. They also become involved in more serious tasks, such as selling war bonds and supporting wounded soldiers at the hospital. As they become more involved in their work, the girls encounter challenges and obstacles, including difficult weather conditions, strict military regulations, and personal setbacks. However, they persist and ultimately succeed in their mission, earning the admiration and gratitude of the soldiers and their community. Overall, "The Outdoor Girls in the Army" is a story about the power of friendship, courage, and determination, and the importance of doing one's part in times of war.