The Command and Tactical Supports Unit of the Brigade ensures the functioning of the Great Unit Command in terms of logistics and communication.
It is constituted by a company command and a signals command. With volunteer personnel, it is located in Messina.
Founded in Messina from the unification of the "Aosta" Headquarters and the "Aosta" Signals Company on 1st October 1975. On 15th September 1977 the two signals platoons formed a signals company in the unit.
Since 1st March 1993 it is named Command and Tactical Supports Unit and, along with the company command and services and the signals company, it includes the "Aosta" Sappers Engineer Company that lost its independencies.
When the 4th Sappers Engineer Regiment was included in the Brigade, the unit lost the Engineer Company.