Heady decorations for the military (8)

I believe the answer is:

cockades

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'heady decorations' is the definition.
'cockades' can be an answer for 'decorations' (cockade is a kind of decoration). I am not certain of the 'heady' bit.

I cannot understand how the rest of the clue works.

Can you help me to learn more?

I've seen this clue in the Evening Standard.

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