The regiment's three battalions operate the army's telecommunications network in central Italy and Sardinia.

In 1975, the battalion was named for the Lanciano Pass and assigned the flag and traditions of the 3rd Engineer Regiment (Telegraphers).

In 1993, battalion lost its autonomy and entered the reformed 3rd Signal Regiment, which continued to support the army's general staff.

In 2000, the regiment incorporated the Signal Battalion "Gennargentu", which operated the army's telecommunications network in Sardinia.

In 1895, the regiment provided seven officers and 192 enlisted for units deployed to Eritrea for the First Italo-Ethiopian War.

In August 1912, the task of training the army's radio-telegraphic service personnel was transferred to the 3rd Engineer Regiment (Telegraphers), while the Specialists Battalion continued to train the radio-telegraphic personnel of the army's Military Aviation Corps.

The Italian inventor Guglielmo Marconi served as officer in the regiment during the war.

[4] At the outbreak of World War II the depot of the 10th Engineer Regiment in Santa Maria Capua Vetere formed the X Connections Battalion, which served with the X Army Corps in the Western Desert campaign, while the depot of the 8th Engineer Regiment in Rome formed the X Telegraphers Battalion and X Marconisti Battalion, the latter of which moved to the Forte Trionfale in Rome as a support unit of the Royal Italian Army's General Staff.

In the evening of 8 September 1943, the Armistice of Cassibile, which ended hostilities between the Kingdom of Italy and the Anglo-American Allies, was announced by General Dwight D. Eisenhower on Radio Algiers and by Marshal Pietro Badoglio on Italian radio.

The battalion was named for the Lanciano Pass, which connects the provinces of Chieti and Pescara.

[4] On 12 November 1976, the President of the Italian Republic Giovanni Leone assigned with decree 846 the flag and traditions of the 3rd Engineer Regiment (Telegraphers) to the battalion.

[4] In 1998, the regiment was tasked with the operation of the army's telecommunications network in central Italy and the Tuscany and Emilia-Romagna regions.

In 2000, the regiment incorporated the Signal Battalion "Gennargentu", which operated the army's telecommunications network in Sardinia.