18th Army Corps

18th Army Corps is a combined arms unit of the Ukrainian Ground Forces.

The corps was formed in March 2025, as part of the broader effort within the Ukrainian military to transition to a Corps-Brigade structure.

On April 12, 2025, the commander of the 10th Mountain Assault Brigade, Colonel Roman Darmohray, was appointed as the commander of the 18th Army Corps.

Darmohray transferred his previous position to the brigade’s Chief of Staff, Colonel Volodymyr Potyeashkin.

In May 2025, the corps received its officially approved chevron.

In August 2025, it became known that the combat composition of the corps had been fully revealed, including the 1st Heavy Mechanized Brigade, 21st, and 47th Mechanized Brigades, the 47th Artillery Brigade, and the 66th and 156th Mechanized Brigades.

Insignia

The insignia displays a heraldic shield divided into red and olive-green fields, bordered in gold. At its center is a silver diver, symbolizing military command and the responsibility vested in the corps headquarters. The diver is overlaid with a saber, representing the corps’ readiness to defend the homeland and its fighting spirit. Behind these elements is a silver lanceolate cross with a pointed lower arm, a symbol derived from the territorial heraldry of the region. A silver eight-pointed star further references historic local heraldic traditions, reinforcing the corps’ connection to the lands from which it draws its identity and heritage.