For the traditionalist the classic BDU is the most popular MIL-SPEC uniform and has been for years. These combat tested pieces give the wearer the basic features and options to get the job done. Adopted by the U.S. military as their primary combat uniform in the early 1980s, these popular uniforms served well into the mid 2000s and remains a popular favorite among many. Built to U.S. specification MIL-T-44047E.