The 4th Ukrainian Front () was the name of two distinct Red Army strategic army groups that fought on the Eastern Front in World War II. The front was first formed on 20 October 1943, by renaming the Southern Front and was involved in the Lower Dnieper Strategic Offensive Operation, two battles of Kiev and the Crimean Strategic Offensive Operation. After the liberation of Crimea, the front was disbanded in May 1944. For the second time the 4th Ukrainian Front was created on 4 August 1944, by separating the left wing of the 1st Ukrainian Front. The front took part in the Carpathian Offensive simultaneously with the Battle of the Dukla Pass. Afterwards, the front was involved in the battles in East-, North- and Central Slovakia, as well as in the Moravian-Ostrava Offensive Operation on the Polish-Moravian borders and finally in the Prague Offensive which was the final battle of World War II in Europe. The actions of the 4th Ukrainian Front were important for the liberation of Czechoslovakia. The 1st Czechoslovak Army Corps also served within the front from November 1944 until May 1945. On 25 August 1945, the front was disbanded and its elements incorporated into the Carpathian Military District. 4th Ukrainian Front, April 1944 - May 1944 Order of Battle, on 1 April 1944 Units subordinated to the Front: 35th Tank-destroyer Artillery Brigade, 530th Tank-Destroyer Artillery Regiment, 4th Guards Mortar Brigade (13th, 30th, 31st Guards Mortar Regiment), 2nd, 4th, 19th, 21st, 23rd, 67th Guards Mortar Regiments, 270th Guards AA Artillery Regiment (from 18th Anti-Aircraft Artillery Division), 1069th AA Artillery Regiment (from 2nd Division), 1485th Anti-Aircraft Artillery Regiment 19th Tank Corps (79th, 101st, 202nd Tank Brigades, 26th Motorized Rifle Brigade, 867th, 875th SP Artillery Regiments, 91st Motorcycle Battalion, 1511th Tank-Destroyer Artillery Regiment, 179th Mortar Regiment, 1717th AA Artillery Regiment) 6th Guards Tank Brigade, 52nd Motorcycle Regiment, 5th Separate Armored Car Battalion, 46th and 54th Separate Armored Train Battalions 7th Engineer-Sapper Brigade, 2nd Pontoon-Bridge Brigade, 3rd Guards, 65th, 240th Separate Engineer Battalions, 17th Guards Mine Battalion, 102nd Pontoon-Bridge Battalion (from 5th Pontoon-Bridge Brigade) 2nd Guards Army 13th Guards Rifle Corps 3rd Guards Rifle Division 24th Guards Rifle Division 87th Guards Rifle Division 54th Rifle Corps 126th Rifle Division 315th Rifle Division 387th Rifle Division 55th Rifle Corps 87th Rifle Division 347th Rifle Division 116th Fortified Region 2nd Guards Breakthrough Artillery Division (4th Guards Light Artillery Brigade, 114 Gun Artillery