What does the cryptic crossword clue "Soldiers’ ‘quiet’ hospital eradicated respiratory disease (7)" mean?

The wordplay uses a charade (building blocks). HUS (synonym="HUS") + SARS (synonym="‘respiratory disease’") = HUSSARS The answer is HUSSARS.

Soldiers’ ‘quiet’ hospital eradicated respiratory disease (7)

Guardian Cryptic #29408 | 5 Down | 2024-06-13 flower