Call for a rising (8)

I believe the answer is:

reveille

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'call' is the definition.
(I have seen 'Early call' mean 'reveille' so perhaps 'call' could also mean 'reveille')

I don't understand how the remainder of the clue works.

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(Other definitions for reveille that I've seen before include "Army waking signal" , "Signal to awaken soldiers at daybreak" , "Rousing bugle-call" , "What soldiers get up to" , "Military wake-up call" .)

I've seen this clue in The Globe and Mail.

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