of the 1st Special Forces was authorized to be worn by personnel of the U.S. Army Special Forces Command (Airborne) and its subordinate units on 7 March 1991. The wear of the insignia by the U.S. Army Special Forces Command (Airborne) and its subordinate units was canceled and it was authorized to be worn by personnel of the 1st Special Forces Command (Airborne) and their subordinate units which were not authorized a distinctive unit insignia in their own right and amended to change the symbolism on 27 October 2016. Shoulder sleeve insignia The shoulder sleeve insignia (SSI) of the 1st Special Forces Command (Airborne) is worn by all those assigned to the command and its subordinate units who have not been authorized their own SSI, such as the Special Forces Groups. According to the U.S. Army Institute of Heraldry, the shape and items depicted in the SSI have special meaning: "The arrowhead alludes to the American Indian's basic skills in which Special Forces personnel are trained to a high degree. The dagger represents the unconventional nature of Special Forces operations, and the three lightning flashes, their ability to strike rapidly by Sea, Air or Land." Army Special Forces were the first Special Operations unit to employ the "sea, air, land" concept nearly a decade before units like the Navy SEALs were created. Before the 1st Special Forces Command SSI was established, the special forces groups that stood up between 1952 and 1955 wore the Airborne Command SSI. According to the U.S. Army Institute of Heraldry, the Airborne Command SSI was reinstated on 10 April 1952—after being disbanded in 1947—and authorized for wear by certain classified units—such as the newly formed 10th and 77th Special Forces Groups—until the 1st Special Forces Command (Airborne) SSI was established on 22 August 1955. Special Forces Tab Introduced in June 1983, the Special Forces Tab is a service school qualification tab awarded to soldiers who complete one of the Special Forces Qualification Courses. Unlike the Green Beret, soldiers who are awarded the Special Forces Tab are authorized to wear it for the remainder of their military careers, even when not serving with an Army Special Forces unit. The cloth tab is an olive drab arc tab 3 1/4 inches (8.26 cm) in length and 11/16-inch (1.75 cm) in height overall, the designation "SPECIAL FORCES" in black letters 5/16-inch (.79 cm) in height and is worn