Nothing is known of any action involving R-1s during 1944, but eleven reinforced the 2nd Armored Regiment in Czechoslovakia when it reached the front on 26 March 1945.
Teated R-1-de osalemisest lahingutes 1944. aastal puuduvad, kuid 11 tanketti toetas 2. soomusrügementi Tšehhoslovakkias, kui see 26. märtsil 1945. seal rindele jõudis.