 Nyora kupfuurira kweiyi ndima - R-1s dzakapihwa kumabhirigidhi euto rehondo, mapoka maviri evatangi vaviri kana vatatu mumwe nomumwe. Vose gumi nevasere vaiva veCavalry Corps vakabatanidzwa mu ad hoc Korne Mechanized Detachment panguva dzekutanga dzeOperation Barbarossa, asi vose vakanga vasisiri kushanda na1 Gumiguru. Makumi maviri nemapfumbamwe kubva pamakumi matatu neshanu ekutanga akapiwa kumapoka matanhatu evatasvi vemabhiza akagadziriswazve kubva kumabhirigedhi musi wa25 Kurume 1942 ayo akabudirira kutora chikamu muchiGerman 1942 yezhizha yekurwisa, yakatumidzwa zita rekuti Case Blue. R-1s ina dzaive dze1st Mechanized Squadron ye1st Cavalry Division dzaifanira kupiswa sezvo pakanga pasina mafuta aivepo kwavari apo chikamu chakapoteredzwa kunze kweStalingrad munaNovember 1942 sechikamu cheSoviet Operation Uranus counter-offensive. The 5th uye 8th Cavalry Divisions vakanga varasikirwa kanenge kashanu R-1s panguva iyoyo kuedza kusimbisa crumbling Axis kuzvidzivirira pashure Soviet breakthroughs. Mapoka maviri aya akatsigira maGerman pavakaedza kubvisa muhomwe yeStalingrad muOperation Winter Storm, asi vakapwanyika apo maSoviet akarwisa basa rekubatsira rakanga risina kubudirira mukupera kwaZvita 1942. Mamwe mapoka maviri emabhiza akaramba ari muKuban bridgehead mushure mekubva kweGerman kubva kuCaucasus, asi avo maviri akasara anoshanda R-1 akadzoserwa kuRomania mukati megore ra1943 sekushaya basa. Pana 30 August 1943 chete gumi nematatu R-1s dzaivapo, zvose akapiwa Cavalry Training Center, kunyange ichi vakawedzera nomumwe pamusoro uwandu yomusi 25 March uye 19 July 1944. Hapana chinozivikanwa pamusoro pechipi nechipi chiito chinobatanidza R-1s mukati me1944, asi gumi nerimwe rakasimbisa 2nd Armored Regiment muCzechoslovakia apo yakasvika mberi musi wa 26 March 1945. Pakazosvika musi wa 24 Kubvumbi, chikwata ichi chaingova neR-1 imwe chete, asi hapana yakashumwa seyakagadziriswa mushure mezuva iroro. 