The M-1965 Field Jacket (also known as M65 and M-65 Field Jacket), named after the year it was introduced, is a popular field jacket initially designed for the US military under the MIL-C-43455J standard. It was introduced into US military service in 1965 to replace the M-1951 field jacket still preferred by US Troops, an improvement on the M-1943 field jacket of Second World War design. It was almost exclusively made by Alpha Industries for the military, and Alpha was instrumental in working with the U.S. military designers to improve their performance and design.