Following a number of months of training in the United States, the regiment, under the command of Colonel William Wallace, embarked upon the troopship RMS Aquitania at New York, and departed for Europe on 8 June 1918.

[1] They arrived in Liverpool, England on 15 June, and entrained for Southampton from where they embarked again for the trip across the English Channel to France.

The American pilots, as members of the Italian bombardment squadrons, engaged in bombing raids behind Austrian lines, being especially active during the progress of the Vittorio Veneto offensive.

[2] Its principal missions were to build up Italian morale and to depress that of the enemy by creating the impression that a large force of Americans had reached the front and was preparing to enter that battle line and take an active part in the fighting.

The regiment was first stationed near Lake Garda, where it trained in methods of warfare suitable for the difficult mountain terrain which comprised the greater part of the Italian Theater of Operations.

From there, for the purposes of deceiving the enemy, it staged a series of marches in which each battalion, with different articles of uniform and equipment, left the city by different road, circulated during daylight hours in exposed positions for both the Italians and Austrians to see, and returned after nightfall to its station at Treviso in as inconspicuous a manner as possible.

On 3 November, after several hard marches, the 332nd Infantry established contact with an enemy rear-guard battalion which was defending the crossings of the Tagliamento River near the village of Ponte-della-Delizia.

Continuing to move forward along the Treviso-Udine railroad, the 2nd battalion occupied the town of Codroipo where it took possession of large stores of munitions and supplies.

[1] The 332nd Infantry Regiment was reconstituted in the Organized Reserve on 24 June 1921, assigned to the 83rd Division, and allotted to the Fifth Corps Area.