was allowed to wear a badge consisting of a regimental colour supported by two crossed swords. The Royal Artillery had the special rank of bombardier below the corporal, and both he and the acting bombardier wore one chevron. The Royal Engineers and Army Ordnance Corps also had an additional rank of second corporal, who wore one chevron. On full-dress tunics, badges in white or gold lace were worn only on the right arm, but on service dress jackets, badges in worsted embroidery were worn on both arms. In February 1918 the acting bombardier was renamed lance-bombardier, and the full bombardier gained a second chevron in 1920 replacing the rank of corporal in the RA. Second corporals also disappeared at that time (the second corporal had been an actual rank, whereas lance-corporal was private acting in the rank of corporal). The pre-war infantry rank of colour sergeant had generally given way to the ranks of company sergeant-major and quartermaster-sergeant in 1914 when the four-company organization was introduced. Both of these ranks, their squadron, and battery equivalents, and staff-sergeants in other arms, wore three chevrons and a crown, although, in 1915 company, battery, squadron, and troop sergeant-majors became warrant officers class II (by Army Order 70) and thereafter wore a single large crown, without any chevrons, on each forearm. The designation of warrant officer classes was in Roman rather than Arabic numerals until the latter half of the 20th century. Regimental quartermaster-sergeants wore four chevrons on the lower sleeve, point upwards, with an eight-pointed star above, but adopted the crown when they too became warrant officers class II in 1915. In their case, however, the crown was surrounded by a wreath. Regimental sergeant-majors, who before the Boer War had worn four chevrons with a crown, were given in 1902 the badge of a single large crown on the lower arm but adopted a small version of the Royal arms in its place in 1915 when they became warrant officers class I. Certain senior grades of warrant officer were also peculiar to the specialist branches, which ranked above regimental sergeant-majors. These were the conductors of the Army Ordnance Corps and the first-class staff sergeant-majors of the Army Service Corps and the Army Pay Corps. They also wore a large crown, surrounded by a wreath, on the lower arm, although in 1918 this was replaced by the Royal Arms within a wreath. The RA