The unit was formed in 1906 in Rome as a detached brigade of the 3rd Engineer Regiment (Telegraphers) and tasked with training the army's wireless telegraphy personnel.

In 1975, the battalion was named for the Splügen Pass (Italian: Passo Spluga) and assigned the flag and traditions of the 1st Radio-Telegraphers Regiment.

In August 1912, the task of training the army's radio-telegraphic service personnel was transferred to the 3rd Engineer Regiment (Telegraphers), while the Specialists Battalion trained the radio-telegraphic personnel of the army's Military Aviation Corps.

[4] At the outbreak of World War I the 3rd Engineer Regiment (Telegraphers) mobilized nine radio-telegraphers sections for service on the Italian Front.

The new regiment united all radio-telegraphers units of the army and consisted of a command, five battalions, a depot in Rome, four branch depots in Mestre, Florence, Piacenza, and Palermo, and the Special Radio-Telegraphers Section for Sardinia, which was based in Cagliari.

The regiment's five battalions were based in Rome, Mestre, Florence, Piacenza, and Palermo and consisted of two radio-telegraphers companies each.

[4] On 1 December 1948, a Connections Battalion was formed in Milan as support unit of the III Territorial Military Command.

The battalion was named for the Splügen Pass (Italian: Passo Spluga), which connects the canton of Grisons in Switzerland with the Lombardy region in Italy.

[3][4][8] On 12 November 1976, the President of the Italian Republic Giovanni Leone assigned with decree 846 the flag and traditions of the 1st Radio-Telegraphers Regiment to the battalion.

On 16 September 1996, the regiment was transferred from the 3rd Army Corps to the Support Units Command "Legnano".

On 1 November 2001, the regiment was assigned to the Signal Brigade of the NATO Rapid Deployable Corps – Italy.