Bad Oeynhause, Wumag of Goerlitz, and F. Schchau of Elbing facilities. These vehicles were meant to enable Panzergrenadiere to accompany panzers and provide infantry support as required. In practice, there were never enough of them to go around, and most Panzergrenadier units had to make do with trucks for transport. In August 1943, Romania acquired a total of 27 armored half-tracks, of both the 251 and 250 types followed in 1944 by 251 type and other types of armored cars to convert two cavalry divisions into armored or mechanized divisions. Sd.Kfz. 251s were known as SPW mijlociu ("medium SPW") in Romanian service, while Sd.Kfz. 250s were referred to as SPW ușor ("light SPW"). The Army of the Independent State of Croatia received 15 Sd.Kfz. 251 in spring 1944 and the Ustashe Militia received 12 in autumn 1944. Variants There were 23 official variants, and sundry unofficial variants. Each variant is identified by a suffix to the model number; however, there was some overlap in the variant numbers. Sd.Kfz. 251/1 - Schützenpanzerwagen. Standard personnel carrier. Sd.Kfz. 251/1 Ausf. A Ungepanzerte. Made with plain steel 5mm plates instead of armour, to make up numbers due to slow initial 251 production. Around 350 made up to mid 1940. 251/1 I - with intercom facilities 251/1 II - Rocket launcher (called "Stuka zu Fuß" (Walking Stuka) or Wurfrahmen 40) equipped with six side-mounted frames for launching 280 mm or 320 mm Wurfkoerper rockets. Sd.Kfz. 251/1 - Falke Infrared imaging equipment for driver and MG 42 or MG 34 machine gun operator, to be used in combination with Sd.Kfz. 251/20 Uhu. Mostly Ausf. D variants. Sd.Kfz. 251/2 - Schützenpanzerwagen (Granatwerfer). 81 mm Mortar carrier. Carried 66 rounds for the GrW34. A base plate was also stored so that the mortar could be offloaded and used. Sd.Kfz. 251/3 - mittlerer Kommandopanzerwagen (Funkpanzerwagen). Communications vehicle, fitted with extra radio equipment for command use in Ausf. C and Ausf. D versions. 251/3 I - FuG8 and FuG5 Radios 251/3 II - FuG8 and FuG5 Radios 251/3 III - FuG7 and FuG1 Radios (for ground to air coordination) 251/3 IV - FuG11 and FuG12 Radios (with 9 m telescopic mast); Command vehicle variant (Kommandowagen) 251/3 V - FuG11 Radio Sd.Kfz. 251/4 - Schützenpanzerwagen für Munition und Zubehör des leIG18. Gun-towing tractor, initially for use with the 7.5 cm leichtes Infanteriegeschütz 18. Later used to tow the 50 mm Pak