In 1959, the United States handed over to Pakistan 25 B-57B aircraft removed from the armament of the disbanded 345th Bomber Group.
The external difference of these planes was the more pointed nose of the fuselage, in which the all-weather RB-1A Georgia Peach bomber system was installed. In the Pakistan Air Force, bombers went into service with the 7th and 8th squadrons, which took part in the bitter battles of the wars of 1965 and 1971.
During these wars, the Indian Air Force used English Electric Canberra as bombers and scouts, similarly the Pakistan Air Force used American-built Martin B-57s.