Use "katyusha rocket" in a sentence

1. The jihadists also captured a massive weapons depot that contained dozens of tanks, Katyusha rocket launchers and small arms.

2. When the shipments were complete, the artillery was positioned along the entire length of the Leningrad, Second Baltic and Volkhov fronts at a concentration of 200 guns per kilometer, including 21,600 standard artillery pieces, 1,500 Katyusha rocket guns, and 600 anti-aircraft guns.