When the Army officially created the position of Warrant Officers in 1918, the design of both the rank and specialty insignias owed a great deal to the Navy’s rate and rating system—somewhat ironic, since Warrant Officers s were initially found only on seagoing mine-planting vessels, as well as the fact that the Navy had had Warrant Officers since its founding in 1775. In fact, the first Warrant Officers might have been mistaken for Sailors if they’d worn their insignia on the top half of their uniform sleeves.
For the Mine Planter Service, two types of Warrant Officer job specialties were created: Deck and Engineer. Within each type were three ranks that were equivalent between specialties—the Master (deck) held the same rank as the Chief Engineer, the First Mate was equivalent to the First Assistant Engineer, and the Second Mate and Second Assistant Engineer were the lowest ranking of all.
More CWO 2 Rank InsigniaPre-2004 Warrant Officer Branch ItemsIn January 1920, two sleeve insignias for the job specialties were created by War Department Circular 15, a three-bladed propeller for Engineer positions and a fouled anchor for the Deck jobs. Although no rank insignia was authorized, the personnel in the Mine Planter Service created their own by using strips from brown burlap bags, with Masters and Chief Engineers wearing four stripes, First Mates and First Assistant Engineers three, and Second Mates/Assistant Engineers two. Military historians say that it was this decision by Warrant Officers that led to Brown being named the official color of the Warrant Officer Corps, and the color was used to different degrees in Warrant Officer rank insignia all the way until 1970.