Soldier feeds egg to fiery monster (7)
I believe the answer is:
dragoon
'soldier' is the definition.
(dragoon is a kind of soldier)
'feeds egg to fiery monster' is the wordplay.
I cannot quite understand how this works, but
'egg' could be 'o' (an 'o' resembles an egg) and 'o' is located in the answer.
'monster' could be 'dragon' (dragon is a kind of monster) and 'dragon' is found in the remaining letters.
This accounts for all the letters.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for dragoon that I've seen before include "Force" , "Former heavily-armed cavalryman" , "Shanghai" , "bully" , "Coerce someone to do something against their will" .)