The regiment and its groupings were disbanded by invading German forces after the announcement of the Armistice of Cassibile on 8 September 1943.

The group was assigned to the 3rd Missile Brigade "Aquileia", which consisted of the Italian Army's units with a nuclear weapons mission.

[1] This article is about the Royal Italian Army's 1st Heavy Artillery Regiment, which was a support unit assigned to an army-level command.

All three companies had also participated in 1860-61 in the Piedmontese invasion of Central and Southern Italy and fought in the Siege of Gaeta.

In March 1896 troops drawn from eight companies deployed to Eritrea, where they formed four batteries for the First Italo-Ethiopian War.

The regimental depot formed the commands of the 11th, 19th, 20th, 21st, 44th, 45th, 49th, 52nd, 53rd, 54th, 56th, 62nd, 67th, and 75th siege groupings and the commands of 34 siege groups: XXXV, LXI, LXX, XCVII, CI, CII, CIV, CXIX, CXXIII, CXXIV, CXXVII, CXXVIII, CXXIX, CXXX, CXXXI, CXXXII CXXXVI, CXL, CLIII, CLXI, CLXVII, CLXXV, CXCI, CXCII, CXCIII, CXCVIII, CCIII, CCIV, CCV, CCVI, CCVII, CCVIII, CCXXIII, and CCXXXVIII.

By January 1923 the regiment consisted of a command and four groups, which fielded a mix of cannons, howitzers, and mortars.

The depot was disbanded by invading German forces after the announcement of the Armistice of Cassibile on 8 September 1943.

The group was assigned to the III Missile Brigade, which consisted of the Italian Army's units with a nuclear weapons mission.

The group was named for the Adige river, which flows past the unit's base.

[7] The bases in Elvas and in Natz-Schabs were guarded by the 4th Fusiliers Company of the 3rd Missile Brigade "Aquileia".