What does the cryptic crossword clue "Maxim used by SAS as her windows smashed (12)" mean?

The wordplay uses an anagram. anagram of AS HER WINDOWS = WHODARESWINS The answer is WHODARESWINS.

Maxim used by SAS as her windows smashed (12)

Independent Cryptic #11704 | 18 Across | 2024-04-15 flower