Formed in 1862 and originally named for the city of Palermo the regiment is part of the Italian Army's infantry arm.

The command of the regiment and the II Battalion had just arrived Apulia in southern Italy, when the Armistice of Cassibile was announced on 8 September 1943.

From 28 September 1943 to 27 January 1944 the regiment was assigned to the I Motorized Grouping, which was attached to the American 36th Infantry Division.

In 1895-96 the regiment provided eight officers and 245 enlisted for units deployed to Italian Eritrea for the First Italo-Ethiopian War.

[2][3] In 1911-12 the regiment provided 32 officers and 1,088 enlisted to augment units fighting in the Italo-Turkish War.

At the time the 67th Infantry Regiment consisted of three battalions, each of which fielded four fusilier companies and one machine gun section.

In November of the same year the brigade was on the Karst plateau, where it fought in the Fourth Battle of the Isonzo, with the 67th Infantry Regiment deployed on Monte San Michele.

In March 1916 the brigade fought in the Fifth Battle of the Isonzo in the Tolmin sector, where it tried to take the hills of Bučenica and Mengore.

In May 1917 the brigade fought in the Tenth Battle of the Isonzo for the summit of Sveta Gora near Gorizia.

In October and November 1917 the brigade fought rearguard actions during the Italian retreat after the Battle of Caporetto.

On 13 September 1918 the brigade was shipped from Taranto to Vlorë in Albania to participate in the last offensive on the Macedonian front.

For its conduct during the war the two regiments of the Brigade "Palermo" were both awarded a Bronze Medal of Military Valor.

[2][8][9][10] At the outbreak of World War II the regiment consisted of a command, a command company, three fusilier battalions, a support weapons battery equipped with 65/17 infantry support guns, and a mortar company equipped with 81mm Mod.

In early January 1941 the division was transferred to Albania to reinforce the Italian front in the Greco-Italian War.

After the Armistice of Cassibile was announced on 8 September 1943, some units were already at Brindisi and Francavilla Fontana, while others were stranded in Bologna or in locations on the way to their destination.

[2][8][9][11] On 28 September 1943 the Legnano division's command was used to form the I Motorized Grouping, which was intended to fight on the Allied side in the Italian campaign.

On 9 September the Bersaglieri of the LI Battalion had defeated two German Fallschirmjäger companies, which had tried to occupy and destroy the harbour of Bari.

In the following days the battalion fought, together with British paratroopers, against German units in Trani and Barletta.

[12] The I Motorized Grouping was attached to the American 36th Infantry Division for the Battle of San Pietro Infine, which aimed at breaking through the German Bernhardt Line.

On 24 September 1944 the II Brigade of the Italian Liberation Corps was reorganized and renamed Combat Group "Legnano".

By the 1960s the 67th Infantry Regiment "Legnano" had formed the IV Mechanized Battalion and an anti-tank company.

On the same date, the regiment's IV Mechanized Battalion in Monza became an autonomous unit and was renamed 67th Mechanized Infantry Battalion "Montelungo", which was assigned the flag and traditions of the 67th Infantry Regiment "Legnano".