An infra-red emitting decoy flare comprising a rupturable container 13 housing combustible flakes 1 and ignition means 20 for igniting the combustible flakes 1. Each of the combustible flakes 1 comprises a fibrous, carbon containing substrate on to which has been vapor deposited on one or both faces thereof a combustible material layer which is capable, in use, of igniting substantially simultaneously the entire surface onto which it is deposited.
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