Deliveries of the T48 were made in 1942 and 1943, with 50 arriving in 1942 followed by a further 912 in 1943.
The British ordered all of the T48s that were produced, intending to use them in the Western Desert Campaign.
By the time the vehicles arrived in the theater in the summer of 1943, the British had already won the war in the Western Desert.
Meanwhile, the 57 mm gun was superseded by the 75 mm gun from the U.S., and later the availability of the Ordnance QF 17-pounder gun, meant that the T48 became surplus to British requirements.
As a result, the vehicles were almost immediately shipped to the Soviet Union under the terms of the Soviet Aid Program.
Through this, the Soviets received 650 vehicles, which they designated the "SU-57" (Samokhodnaya ustanovka 57).
A small number were later passed to the Polish People's Army.

Of the remainder, Britain accepted 30, all of which were converted back into carriers, and the US took 282 vehicles.
Of those retained by the US, all but one were converted back to M3A1 standard carriers in 1944.
The conversion took place at the Chester Tank Depot.
The Wehrmacht also operated a number of T48s as carriers, having captured several from Britain and the Soviet Union.

The Soviets employed the T48 along the Eastern Front, mainly in Operation Bagration.
The Soviet 16th Separate Tank Destroyer Brigade used a large number of T48s in 1943 during the offensive across the Dnieper River, and with the 19th Brigade during the Baranow bridgehead battle in August 1944.
The T48 also served with the Soviet 22nd Self-Propelled Artillery Brigade.
Some of these units also took part in the Berlin and Prague offensives.
The Polish People's Army used T48s assigned to the 7th Self-Propelled Artillery Battery to support Soviet attacks into Germany and Poland.

In Soviet service, the vehicles were allocated to brigades at a scale of 60 per brigade.
During the attack, the vehicles were used to provide mobile fire support, being placed behind the infantry, usually in a hull-down position behind a ridge or a hill, to fire across a broad front to take advantage of the long range of the 57 mm gun.
Deliveries of the T48 were made in 1942 and 1943, with 50 arriving in 1942 followed by a further 912 in 1943. The British ordered all of the T48s that were produced, intending to use them in the Western Desert Campaign. By the time the vehicles arrived in the theater in the summer of 1943, the British had already won the war in the Western Desert. Meanwhile, the 57 mm gun was superseded by the 75 mm gun from the U.S., and later the availability of the Ordnance QF 17-pounder gun, meant that the T48 became surplus to British requirements. As a result, the vehicles were almost immediately shipped to the Soviet Union under the terms of the Soviet Aid Program. Through this, the Soviets received 650 vehicles, which they designated the "SU-57" (Samokhodnaya ustanovka 57). A small number were later passed to the Polish People's Army.
Of the remainder, Britain accepted 30, all of which were converted back into carriers, and the US took 282 vehicles. Of those retained by the US, all but one were converted back to M3A1 standard carriers in 1944. The conversion took place at the Chester Tank Depot. The Wehrmacht also operated a number of T48s as carriers, having captured several from Britain and the Soviet Union.
The Soviets employed the T48 along the Eastern Front, mainly in Operation Bagration. The Soviet 16th Separate Tank Destroyer Brigade used a large number of T48s in 1943 during the offensive across the Dnieper River, and with the 19th Brigade during the Baranow bridgehead battle in August 1944. The T48 also served with the Soviet 22nd Self-Propelled Artillery Brigade. Some of these units also took part in the Berlin and Prague offensives. The Polish People's Army used T48s assigned to the 7th Self-Propelled Artillery Battery to support Soviet attacks into Germany and Poland.
In Soviet service, the vehicles were allocated to brigades at a scale of 60 per brigade. During the attack, the vehicles were used to provide mobile fire support, being placed behind the infantry, usually in a hull-down position behind a ridge or a hill, to fire across a broad front to take advantage of the long range of the 57 mm gun.
T48 Gun Motor Carriage