As a Schlachtflugzeug the Fw 190 brought an increased level of firepower to the Eastern Front, especially the F-8 version which appeared during the spring of 1944. Erprobungskommando 26 under specialist anti-tank pilot Maj. Hubert Eggers had been established at Udetfeld (near Gleiwitz in Upper Silesia) to test suitable armament and quickly set about adapting the German Army's successful 'Panzerschreck' for airborne carriage and launch. Similar to the US 'bazooka' the 'Panzer Granate 4322' was a larger 88 mm calibre hollow-charge anti-tank rocket. Testing with rockets mounted on underwing ETC carriers started in August 1944 and trials against tanks during September took place at distances from 100 metres, the weapon being launched in salvos of six. The rockets were regarded as a big improvement in comparison to the Mk 103-equipped Hs 129 or the Ju 87 Kanonenvogel with Flak 18. Fw 190 F-8s of 5./ SG 77 under Oblt. Stephan Schmitt were among the first to deploy 'Panzerschreck' in action being fitted out at Udetfeld in late September 1944 and flying their first missions from Sarospatak in Hungary in early October. Attacking Soviet tanks close to the Hungarian–Rumanian border on October 7, the Staffelkapitän was hit by anti-aircraft fire and killed. He was subsequently awarded the Knight’s Cross posthumously on 29 October. Other units understood to have taken delivery of the rocket in late 1944 included III./SG 3 at Frauenberg in Latvia, II./SG 2 and 8./SG 1, with further elements of SG 10 following in 1945. Around 90 Fw 190s had been equipped to launch Panzerschreck by December 1944.
'Panzerblitz' was not a development of the 'Panzerschreck' but a slightly more 'sophisticated' second anti-tank unguided rocket developed from the R4M Orkan air-to-air rocket used by the Messerschmitt Me 262. It was fitted with either an 80 mm (3.1 in)-diameter standard warhead, in Panzerblitz I, or a 210 mm (8.3 in)-diameter hollow charge warhead, in the Panzerblitz II. Special launch or discharge rails were designed for Panzerblitz by Curt Heber of Osterode, the firm also constructing launch racks for the R4M air to air rocket ; the Einzelschussgerät Panzerblitz (EG Pb) were 'single shot' rails which could be combined together in a launch ‘system’, the Abschussschienegerät Pb (AG Pb) of six or eight rails bolted together. Capable of 410 m/s, the higher velocity of the 'Panzerblitz' enabled tanks to be destroyed at greater ranges of up to 200 m distance with rockets being fired in salvo or in pairs. The only limitation was a maximum speed of 490 km/h, not to be exceeded during missile firing. Up to February 1945 the Luftwaffe received 115 Fw 190 F-8/Pb 1 machines. The Fw190 F-8/Pb2 - Panzerblitz 2 (Pb 2) unit differed in the replacement of the M8 warhead by a hollow-charge warhead able to penetrate up to 180 mm armour. Also developed was the new missile system Panzerblitz 3 (Pb 3) with a 210 mm hollow-charge warhead, but it was not operational by the end of the war.
III./SG 4 was one of the first Gruppen to deploy 'Panzerblitz' in action, certainly in the West, flying their first operational sorties with the missiles during December 1944, having trained at Udetfeld during November. Extracts from the III./ SG 4 KTB;
".. in Udetfeld Beginn des Schiessens mit Panzerblitz auf Beutepanzer auf den Luftschiessplatz.."
In the East Lt. Irmfried Zipser's III./ SG 1 gave up their Ju 87 Stukas during May 1944 and converted on to the Fw 190 F;