11. The turn-of-the-century building was a smoking shell , its whitewashed walls blackened around holes where windows were. 12. Over 100 smoke shells were fired from supporting artillery to screen infantry moving through Karbala's streets. 13. The French responded with smoke shells from a 120-mm mortar, the biggest weapon in their arsenal. 14. As with grenades, artillery shells are available as both emission type smoke shell, and bursting smoke shell . 15. As with grenades, artillery shells are available as both emission type smoke shell , and bursting smoke shell. 16. Smoke shells were also available for some AA guns, these bursts were used as targets during training.17. The Serbs failed to stop the attack after the peacekeepers fired a warning smoke shell , he said. 18. Smoke shell was to be fired, to hide the attacking troops, as they re-organised at each objective.19. There was also a D-412 smoke shell . 20. The trench mortar was first used in 1915 during the Battle of Loos to fire a smoke shell .
