104th Territorial Defense Brigade

104th Territorial Defense Brigade is a unit of the Ukrainian Territorial Defense Forces.

The brigade was established in June 2018 in Rivne Oblast.

At the onset of the full-scale invasion, servicemen of the brigade defended northern Ukraine, particularly Kyiv Oblast, against advancing Russian forces trying to breakthrough towards the capital. After the withdrawal of Russian forces in April of 2022, the brigade was redeployed to both southern and eastern Ukraine to participate in combat operations.

In December 2022, the brigade was awarded its battle flag.

In 2023, an International Unmanned Systems Company was formed, composed predominantly of Ukrainian and Portuguese speakers, bearing the name “Los Serafines”. The unit participated in the defense of Avdiivka and Kherson, and later partook in fighting around the crucial city of Kupyansk, and Zaporizhzhia Oblast.

Serafines Battalion was later expanded to a battalion, where it consists of three strike platoons and a reconnaissance platoon.

Following the reformation of the Ukrainian Territorial Defense Forces throughout mid to late 2025, the brigade reformed several battalions under its jurisdiction into linear units.

As of March 2026, the brigade was temporarily assigned under the jurisdiction of the 18th Army Corps of the Ukrainian Ground Forces.

Insignia

The insignia displays a chevron, with a battlement design at the top of the chevron’s border in blue. The base color of the chevron illustrates a red color, with the central symbology containing a white Cossack cross, a homage to Ukrainian history and culture.