Archangel who battles Satan in the Book of Revelation (7)

I believe the answer is:

michael

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'archangel' is the definition.
(I know that Michael is a type of archangel)

I cannot understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for michael that I've seen before include "Man's name" , "George -, pop singer" , "- - Flanders, 18's lyricist" , "American musician (originally one of 5)" , "- Faraday, English scientist" .)

I've seen this clue in The Times.

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