The two demi-battalions which formed two combat companies left Sidi Bel-Abbès on August 28, 1914, and arrived on September 7 in metropolitan France.

At their arrival, the two demi-battalions constituted each, one battalion of 250 men with including the forming volunteer effectifs in the recruiting depots.

On September 25, the regiment made way to Mailly-le-Camp and was placed under the authority of the 20ème region of général de Torcy.

Arrived on October 26 at the camp de Mailly, Commandant Noiré's battalion was constituted from the depot in Bayonne, and was readied in line at the beginning of November 1914 at Prunay.

Starting from October 1914, the battalions relayed each other and were either in line within trenches sector of Prunay and the city of des Marquises or being prepositioned in the villages of Verzenay, Mailly and along the Canal de l'Aisne à la Marne.

The regiment garrisoned from April 24 to 25 in Villers-Allerand, Louvois, Montchenot and Sermiers until being transported by train to Aubigny-en-Artois.

Due to a lack of reinforcement, the regiment was only capable of holding for two hours on the last objective and was forced to unfold on cote 123 which was held till the following morning.

On June 4 and 5, 325 Italians left the regiment to rejoin their Armed Forces in their country which recently entered the war.

On the 14, the regiment changed prepositioning and made way to Buyans, Champey, Coisevaux, Chevret and Couthenans then Verlans.

On September 1, the regiment returned to Plancher les Mînes and Le Mont while constituted a sapeurs platoon.

25 Septembre- Octobre 6 : Second Battle of Champagne On September 25, orders were instructed to take part to the mounted offensive with the 10e DIC in the region of Souain.

This offensive went underway until the 28 and resulted in a defeat due to the solid German positions, the incessant bombardments, and the weak artillery preparations.

The regiment was relieved on October 2 and garrisoned on the 4th in camp de la Noblette where a reorganization took place manoeuvering three combat companies per battalion.

Placed in reserve of armed forces corps, the regiment endured the loss of 115 men ( killed, missing or wounded ) out of which 1 Officer.

A second palm was bestowed on the regiment, following dissolution, for a citation on January 28, 1916 (Marne, ferme de Navarin - September to October 1915).