The Su-25 is an attack aircraft developed by the Soviet Union in the 1970s. The Su-25, often compared to the American A-10 Thunderbolt II, is meant to offer ground attack and close air support to ground units. The Su-25 has been seen in different variants, some of the most known ones being the Su-25UB, a two seat trainer, the Su-25K, export variant, Su-25T, anti tank version, and Su-25SM, which was planned to be the variant used by the modern Russian Air Force, but due to funding limitations upgrade plans have been unsatisfactory. The Su-25 has been in several wars, including the War in Afghanistan, the Chechen Wars, and the 2008 Russo–Georgian war.

Introduced in Update "Drone Age", the Su-25 "Grach" (NATO reporting name: Frogfoot) is a famous attack jet, often considered a spiritual successor to the IL-2 and the Soviet equivalent of the American A-10 Thunderbolt II. Like the Warthog, the Su-25 has wide, spindly wings with plenty of hardpoints, a sturdy fuselage, significant armour protection for the pilot, and a powerful 30 mm cannon in the fuselage that will shred light targets and unlucky aircraft alike. The two are rather different otherwise: the Grach is less manoeuvrable but has much better speed and climb and its precision weapons use laser guidance instead of TV. While it will have a hard time tangling with enemy fighters in an even engagement, with all-aspect R-60M missiles and a massive supply of large-calibre countermeasures, the Su-25 should not be disregarded in air combat. In its intended role of ground attack, it can lay waste to enemy vehicles with a variety of high-explosive ordnance.