51st Guards Combined Arms Army

51st Guards Combined Arms Donetsk Army (2024–present)
1st Donetsk Army Corps (2014–2024)
51st Guards Combined Arms Donetsk Army (2024–present)1st Donetsk Army Corps (2014–2024)
51-я гвардейская общевойсковая Донецкая армия
	Great emblem of the 51st Guards Donetsk Combined Arms Army
Active	12 November 2014 – 31 December 2022 (as a breakaway state); 31 December 2022 – present (as part of Russia)
Country	Russia
Branch	Russian Ground Forces
Type	Combined arms
Size	Army
Part of	Southern Military District
Garrison/HQ	Donetsk
Engagements	Russo-Ukrainian War War in Donbas Battle of Mariupol (2014); First Battle of Donetsk Airport; Second Battle of Donetsk Airport; Battle of Debaltseve; Battle of Marinka; Shyrokyne standoff; Battle of Avdiivka; ; Russian invasion of Ukraine Siege of Mariupol; Battle of Volnovakha; Battle of Marinka (2022–2023); Kherson counteroffensive; Battle of Avdiivka (2023–2024); Battle of Toretsk; Pokrovsk offensive; Battle of Kurakhove; ; ;
Decorations	Guards
Battle honours	Donetsk
Commanders
Current; commander	Lieutenant General Sergei Milchakov
Insignia
Sleeve patch
Flag of the Donetsk People's Republic

The 51st Guards Combined Arms Donetsk Army (Russian: 51-я гвардейская общевойсковая Донецкая армия) is a military formation of the Russian Ground Forces as part of the Southern Military District, formerly the 1st Army Corps of the Donetsk People's Republic. It was officially incorporated into the Russian Federation on 31 December 2022, after Russia annexed the occupied territory of Donetsk, and then it was reformed into a Combined Arms Army in 2024.