The 5th Army Corps Auto Group "Postumia" (Italian: 5° Autogruppo di Corpo d'Armata "Postumia") is an inactive military logistics battalion of the Italian Army, which was based in Treviso in Veneto.

[1] The group's anniversary falls, as for all units of the Italian Army's Transport and Materiel Corps, on 22 May, the anniversary of the Royal Italian Army's first major use of automobiles to transport reinforcements to the Asiago plateau to counter the Austro-Hungarian Asiago Offensive in May 1916.

[1] In 1935-36, the center mobilized 23 officers and more than 1,000 troops to augment units deployed for the Second Italo-Ethiopian War.

In the evening of 8 September 1943, the Armistice of Cassibile, which ended hostilities between the Kingdom of Italy and the Anglo-American Allies, was announced by General Dwight D. Eisenhower on Radio Algiers and by Marshal Pietro Badoglio on Italian radio.

Germany reacted by invading Italy and the 5th Drivers Regiment was disbanded soon thereafter by German forces.

The unit was tasked with the transport of fuel, ammunition, and materiel between the military region's depots and the logistic supply points of the army's divisions and brigades.

Like all Italian Army transport units the battalion was named for a historic road near its base, in case of the 5th Army Corps Auto Group for the Roman road Via Postumia, which connected Genoa and Aquileia.