During World War I, the U.S. military issued a number of different helmet designs to its soldiers. One of the most famous helmet designs from World War I is the M1917 helmet, which was introduced in 1917 and used by U.S. forces throughout the war. The M1917 helmet was based on the British Mark I helmet and was made of manganese steel. It had a liner that could be adjusted to fit the wearer’s head, and it was held in place by a chin strap.
The M1917 helmet provided good protection against shrapnel and other debris, and it was widely used by U.S. infantry and other ground troops during the war.
In addition to the M1917 helmet, the U.S. military also used other helmet designs, including the M1918 helmet, which was similar to the M1917 helmet but had a slightly different shape, and the M1919 helmet, which was made of fiberglass and had a more modern design. These helmets were used by various branches of the U.S. military, including the army, navy, and air force.