This is katyusha. Born in Mars 1941, in Soviet. The Katyusha rockets have little guidance, can be launched from the back of a heavy car and the Katyusha was infamous among German troopers (during ww2) who quickly learned to dread its distinctive scream. They named the Katyusha “Stalin’s Organ.”
Now, who the hell left these for ISIS to find and use against civilians in Syria/Iraq? And all the Kalashnikov? There must be thousands of them. Also Soviet made. Is there some kind of clearance sale? Women and children were targeted today in Haditha.