Furthermore the 1st Heavy Artillery Group "Adige" was based in the village of Elvas near Brixen. The "Adige" was armed with M115 howitzers and in peacetime part of the 3rd Missile Brigade "Aquileia". In case of war the group would have supported the Tridentina with conventional artillery fire, but if a Soviet breakthrough was imminent the "Adige" would have plastered the Puster valley from beginning to end with W33 nuclear artillery shells, which were stored in the village of Natz at "Site Rigel" by the United States Army's 11th Field Artillery Detachment. The "Adige" had two firing batteries with four howitzers per battery and 140 (!) nuclear artillery shells to fulfil its task. After the introduction of the MGM-52 Lance tactical surface-to-surface missile system in the 1980s the 1st Heavy Artillery Group "Adige" was disbanded on 31 July 1982 and its 8th Battery joining the 9th Heavy Artillery Group "Rovigo" as 3rd Battery "Wolves of Elvas". The "Rovigo" itself lost its nuclear capability in 1986 and in the same year the US Army left Site Rigel.
