Вот, нагуглилось побыренькому

"German platoons and detachments attempt to infiltrate into our lines. When counterattacked, the Germans usually set up a smoke screen with hand grenades and small smoke pots in an attempt to cover a withdrawal.

German tanks invariably use their smoke-screen apparatus—that is, their smoke projectors—when they are fired upon. The tanks then move to safer places under cover of a smoke screen."
http://www.lonesentry.com/articles/combatsmoke/

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