10 Most powerful machines of World War II (With Pictures)

9. Katyusha (BM-13)

SEE ALSO: 10 Fascinating photos from World War II

Katyusha is an informal name for the tubeless systems of field rocket artillery that widely used by the Armed Forces of the USSR during the Second World war from 1941-1945. Originally BM-13s (mechanized combat vehicle) called as Katyushas, and later BM-8, BM-31, and others also called as Katyusha. BM-13 was the famous and the most massive Soviet war machine (BM) of this class.