In 1975, the battalion was named for the Simplon Pass (Italian: Passo Sempione) and received the number 231st, which had been used by the 231st Connections Company that had served with the 131st Armored Division "Centauro" during the Tunisian campaign of World War II.

[3][4] In 1940, the 131st Armored Division "Centauro" fought in the Greco-Italian War and in 1941 in the Invasion of Yugoslavia.

In October 1942, the division was transferred to Libya to reinforce the Panzer Army Africa fighting in the Western Desert campaign.

[1] In November 1968, the battalion was deployed in the Province of Vercelli to help rescue efforts after heavy floods had devastated the area.

For its work in Vercelli the battalion was awarded a Bronze Medal of Civil Merit.

As part of the reform the Italian Army's signal battalions were renamed for mountain passes.

The battalion was named for the Simplon Pass (Italian: Passo Sempione), which connects the canton of Valais in Switzerland with the Piedmont region in Italy.

[6] On 12 November 1976, the President of the Italian Republic Giovanni Leone granted with decree 846 the battalion a flag.