The unit was raised in the city of Conegliano on 21 August 1902 as "Mountain Artillery Brigade of the Veneto" with three batteries. On 5 July 1909 the brigade was disbanded and its batteries, along with six newly formed ones, entered the newly raised 2nd Mountain Artillery Regiment based in Vicenza. The regiment consisted of three brigades named "Conegliano", "Bergamo", and "Vicenza", which were joined on 1 October 1909 by the newly raised "Belluno" Brigade. On 17 July 1910 the brigades were renamed as groups. The regiment was tasked to provide artillery support to the 5th, 6th, 7th, and 8th Alpini regiments and recruited in Veneto and Lombardy.
World War 1
With tensions rising the army expanded the mountain artillery and on 1 February 1915 the regiment transferred the depot in Bergamo with the Mountain Artillery Group "Bergamo" to the newly formed 3rd Mountain Artillery Regiment. Along with the depot and group, recruitment in Lombardy and the task to support the 5th Alpini Regiment passed to the new regiment. To compensate for the loss of the "Bergamo" Group on the same date the Mountain Artillery Group "Udine" was raised. During the war the regiment's depots raised and trained the commands of two mountain artillery groupings, the commands of 13 mountain artillery groups, and 35 mountain artillery batteries, which were equipped with four 65/17 mod. 13 cannons each. Furthermore, five commands of siege groups, and 21 siege batteries were raised and trained by the regiment.
The regiment raised the following mountain artillery groupings: 6° and 8°.
The regiment raised the following mountain artillery groups: XVI, XXI, XXIII, XXVI, XXVIII, XXX, XLIX, LIII, LIV, LXI, LXIII, LXIV, and LXVII.
Note 2: The group's 56th Mountain Artillery Battery was not raised until November 1916 for lack of available 65/17 mod. 13 cannons.
Interwar Years - New Numbering
Traditionally Alpini units had been numbered from West to East with the 1st Alpini Regiment being the most westward and the 8th Alpini Regiment being the most eastward. However as the 3rd Mountain Artillery Regiment had been raised last it found itself now in the middle between the 1st Mountain Artillery Regiment in the West and the 2nd Mountain Artillery Regiment in the East. To rectify this on 11 March 1926 the 2nd and 3rd mountain artillery regiments swapped numbers.
Cold War
For its conduct and work after the 1976 Friuli earthquake the Mountain Artillery Group "Conegliano" was awarded a Silver Medal of Army Valour, which was affixed to the group's war flag and added to the group's coat of arms.
Current Structure
As of 2019 the 3rd Field Artillery Regiment consists of:
Regimental Command, in Remanzacco
* Command and Logistic Support Battery "Maria Plozner Mentil"
* 24th Surveillance, Target Acquisition and Tactical Liaison Battery "La Bella"