List of B-57 units of the United States Air Force

The Martin B-57 Canberra was first manufactured in 1953, and the United States Air Force had accepted a total of 403 B-57s before production ended in early 1957.

It was the last tactical bomber used by the United States Air Force, being engaged in combat operations during the Vietnam War (1963–1971).

A small number of B-57Cs were later re-equipped and redesignated as RB-57C for service alongside RB-57A Reconnaissance aircraft as trainers when the latter were issued to ANG units.

The aircraft was filled with various cameras and was unarmed, its mission being day and night, high and low, and visual and photographic reconnaissance.

Designated RB-57A-1s, they flew high-altitude reconnaissance missions over Eastern Europe, Communist China and North Korea in the late 1950s.

Two other RB-57As, designated RB-57A-2 were modified with a bulbous nose containing AN/APS-60 mapping radar and a SIGINT direction finder system in 1957 under project SARTAC.

Eight RB-57Es were modified from B-57E Target Towing aircraft and were fitted with cameras and other sensors as part of the "Patricia Lynn Project" during the Vietnam War.

They were used in spotting Viet Cong river traffic at night along the Mekong Delta southeast of Saigon.

Dedicated Air Defense Command target towing aircraft used for training of F-86D Sabre, F-94C Starfire, and F-89D Scorpion interceptors firing 2.75-inch Mk 4/Mk 40 Folding-Fin Aerial Rockets.

Used by Air Defense Command as simulated target aircraft for interceptors and training of ground control intercept radar units.

Also for various special projects such as hurricane monitoring; Air Force Special Weapons Center; high altitude research; aircraft missile launch testing; missile guidance systems testing, FAA and NASA research projects.