During World War I the regiment's depots formed numerous units, which built and operated railways along the Italian front.

After the announcement of the Armistice of Cassibile on 8 September 1943, the regiment was disbanded by invading German forces, while the Ferrovieri units in Southern Italy joined the Italian Co-Belligerent Army.

These units repaired and operated railway lines, which supported the advance of the allied 15th Army Group during the Italian campaign.

[5][6] The regiment's anniversary falls, as for all engineer units, on 24 June 1918, the last day of the Second Battle of the Piave River.

On 1 July 1895, the Ferrovieri Brigade became an autonomous unit and added the 5th and 6th construction companies.

[1] In 1912, the regiment's two motorists companies became responsible to train the personnel of the photo-electrical service, which operated searchlights.

In December 1913, the branch depot in Rome formed the Special Photo-Electrical Section, which trained personnel of the army's artillery arm in the use of searchlights.

[6] During World War I battalions and companies formed by the regiment operated in all sectors of the Italian front.

In April 1920, the photo-electricians units were assigned to newly formed army corps telegraphers battalions.

[6] During World War II the regiment's depot in Turin mobilized the following units:[6] On 9 July 1943, the day before allied forces landed on Sicily, the Italian Army's General Staff ordered that all Ferrovieri units, with the exception of those in Italian occupied France, Italian occupied Greece, Corsica and Sardinia, would be assigned on 15 July 1943 to four Ferrovieri groupings:[6] During the war, the VII Ferrovieri Battalion served in the Western Desert campaign and Tunisian campaign.

[6] 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.

Germany reacted by invading Italy and the regiment and most of its units were disbanded soon thereafter by German forces.

The Ferrovieri repaired, and at times also operated, the Naples-Reggio Calabria, Naples-Caserta, Naples-Rome, Rome-Pisa, Rome-Florence, Bari-Ancona-Bologna, and Bologna-Verona railways.

The grouping was disbanded on 1 November 1945, and only two of its dismountable metal bridges companies remained active.

On 15 December 1949, the Ferrovieri Battalion in Castel Maggiore and the Railway Operations Company in Turin were assigned to the reformed 2nd Pontieri Engineer Regiment.

During the reform the regiment was transferred from the Tuscan-Emilian Military Region to the Engineering Inspectorate.

After the reform the regiment's organization was as follows:[5][6][8] On 8 October 1977, flood waters of the Toce river swept the railway bridge of the Domodossola–Milan railway between Fondotoce and Feriolo away and the Ferrovieri Engineer Regiment was called to rebuild the 120 m (131 yd) bridge.

[1][3] On 27 September 2001, the regiment ceded the operation of the Chivasso–Ivrea–Aosta railway to the Ferrovie dello Stato.