The regiment was formed in 1935 by the Royal Italian Army with batteries that had served in World War I.

After the announcement of the Armistice of Cassibile on 8 September 1943 the regiment was disbanded by invading German forces.

[4][5] For its conduct and bravery during the Battle of Maychew the Group "Belluno" was awarded a Bronze Medal of Military Valor.

[7] The same month the Alpine Artillery Group "Belluno" was reorganized and now consisted of its traditional batteries, the 22nd, 23rd, and 24th.

The regiment served in World War II with the 5th Alpine Division "Pusteria", which in June 1940 participated in the invasion of France.

After the invasion of Yugoslavia the Pusteria was sent to Montenegro, where it fought in the Battle of Pljevlja against Yugoslav Partisan.

[2][3][5][8] In December 1941 the Alpine Artillery Group "Val Piave" was reformed, with the batteries 35th, 36th, and 39th, and equipped with 105/11 mod.

In August 1942, the 5th Alpine Division "Pusteria" was repatriated and, after two months of rest, participated in the Axis occupation of Vichy France.

After the announcement of the Armistice of Cassibile on 8 September 1943 the division and its regiments were disbanded by invading German forces.

On 1 September of the same year the 2nd Mountain Artillery Regiment transferred its recruits training group to the 5th Mountain Artillery Regiment, which afterwards consisted of a command, a command unit, the Group "Bergamo" with 75/13 mod.

In 1926 the group returned to the 2nd Mountain Artillery Regiment, with which it moved in 1936 from Bergamo to Meran.

In World War II the group served with the 2nd Alpine Artillery Regiment "Tridentina" in the Greco-Italian War and then in the Soviet Union, where the Italian Army in Russia was destroyed during the Soviet Operation Little Saturn.

[2][3] For their conduct and bravery on the Greek front the groups of the 2nd Alpine Artillery Regiment "Tridentina" were awarded a Bronze Medal of Military Valor, and for their conduct and sacrifice in the Soviet Union the groups were awarded a Gold Medal of Military Valor, both of which the Group "Bergamo" brought with it to the 5th Mountain Artillery Regiment.

After the announcement of the Armistice of Cassibile on 8 September 1943 the remnants of the Group "Bergamo" were disbanded by invading German forces.

[2][3] The Mountain Artillery Group "Bergamo" was reformed on 1 April 1948 in Bolzano and assigned to the IV Territorial Military Command.

[2][3] The Mountain Artillery Group "Sondrio", named for the city of Sondrio at the Northern edge of the Orobic Alps, was formed for the first time in 1953 with the batteries, that had been part of the Alpine Artillery Group "Val d'Orco" in World War II.

[2][3][9][11] The Mountain Artillery Group "Vestone", named for the village of Vestone on the Eastern edge of the Orobic Alps, was formed for the first time in 1953 with batteries that had been part of the Alpine Artillery Group "Val Piave".

On 30 July 1991 the Mountain Artillery Group "Bergamo" was transferred to the Alpine Brigade "Tridentina".