Did The ROK have 57 mm ATGs? IIRC the only had 37 mm ATGs in June 1950. 57 mm should have been able to hole T-34 from rather short distances. 500m ? And e.g. Centurion and 20 pdr were excellent equipment without need to look the Nazi technology after the war. PS Check the facts, 57mm M1 ATG, firing AP round penetrates T-34/85 front @ 320m according to Yugoslav tests.