Smoke screen operations British

In August two of the four American smoke units were alerted for the Sicilian operation. In September the remaining American companies sailed for Italy, and British troops manned the Bizerte screen until their relief by French units in January 1944. 

Another development that facilitated preparations for chemical warfare under the Munitions Program was the receipt of pertinent information from the British. The assistant military attache in London in the emergency period, a CWS officer, obtained access to data on development and production methods for chemical warfare items, on British smoke operations for screening critical installations, on the effects of incendiary bombing, and on the types of German incendiaries dropped on London. 

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