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

9. Katyusha (BM-13)

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.

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