The United States experienced inflation during World War II, but federal efforts to control it were somewhat successful:
Consumer price index: From 1939 to 1943, the consumer price index increased by about 24%, but only 4% from 1943 to 1945.
Annual inflation rate: From April 1942 to June 1946, the annual inflation rate was 3.5%.
So you could say that Russia today is more capitalist than USA was during WWII (even though they have enormous problems with corruption).