The predecessor of the battalion was established on 21 November 1918 at the beginning of the Estonian War of Independence.

Even though the unit changed its name multiple times during the conflict, it still maintained its original mission to ensure communications between headquarters and fronts.

By the time they came back with Red Army soldiers, the signallers had already armed themselves and a shootout broke out between the opposing sides.

It was the only armed act of resistance from the Estonian Defence Forces against the occupying Soviets.

[2][4][5] After these events, the Signal Battalion was merged into the Red Army's 22nd Rifle Corps which was destroyed during the Baltic Operation in 1941.