Composer sheltered by brave legionnaire (5)
I believe the answer is:
ravel
'composer' is the definition.
(Maurice Ravel, 1875-1937)
'sheltered by brave legionnaire' is the wordplay.
'sheltered by' says the answer is hidden in the clue.
'RAVEL' is hidden in the letters of 'brave legionnaire'.
(Other definitions for ravel that I've seen before include "Composer of the orchestral piece, Bolero, d. 1937" , "Bolero's composer" , "Fray; composer" , "note-writer observed" , "Make more complicated - French composer, d. 1937" .)