The regiment is named for the city of Chieti and part of the Italian Army's infantry arm.

Both regiments consisted of three battalions, which each fielded four fusilier companies and one machine gun section.

From March to July 1916 the brigade was again on the Karst plateau fighting on the slopes of Monte Sei Busi.

In August 1916 the brigade fought in the Sixth Battle of the Isonzo at Doberdò and on the slopes of Črni hrib.

On 17 April 1985 the regiment's flag arrived in Chieti, after having been stored at the Vittoriano in Rome since 1920.