Men work in the shadow of a dock, pushing and carrying war supplies from a ship’s hold onto a train boxcar; a bright background behind shows ships moored, a boom crane and a billowing American...

What is a cootie? Ask a World War I soldier, and you’d get a much more serious answer about a much more serious problem than you might expect.

During World War I, families displayed blue star flags in support of family members serving in the military. If the soldier passed, the blue stars were replaced by gold stars.

World War I is known for introducing wartime innovations such as tanks and submarines, but the world’s armies still made plenty of use of “old-fashioned” technology.

Lance Corporal Bernard Scott Budge served with Company D, 5th Battalion, Queen’s Own Cameron Highlanders. The young soldier was wounded by shrapnel during the Battle of Loos.

The task of feeding soldiers during WWI was enormous and the logistics staggering. For the first time in U.S. history, a trained military unit was responsible for supplying the troops.