Technician fifth grade

Technician fifth grade (abbreviated as T/5, TEC5 or TEC-5) was a United States Army technician rank during World War II. The grades of Technician in the third, fourth and fifth grades were added by War Department on the 8th of January 1942 per Army Regulation 600-35. An update issued on the 4th September 1942, added a letter "T" to the rank insignia.
Those who held this rank were addressed as corporal, though were often called a "tech corporal". Technicians possessed specialized skills that were rewarded with a higher pay grade, but had no command authority. The pay grade number corresponded with the technician's rank. T/5 was under the pay grade 5, along with corporal. Technicians were easily distinguished by the "T" imprinted on the standard chevron design for that pay grade.
The technician ranks were removed from the U.S. Army rank system in 1948, though the concept was brought back with the specialist ranks in 1955.