Soldier who drops in for wild ape or parrot (11)
I believe the answer is:
paratrooper
'soldier who drops in' is the definition.
'paratrooper' can be an answer for 'soldier' (paratrooper is a kind of soldier). I am not certain of the remainder of the definition.
'wild ape or parrot' is the wordplay.
'wild' indicates anagramming the letters.
'ape'+'or'+'parrot'='apeorparrot'
'apeorparrot' is an anagram of 'PARATROOPER'.
'for' acts as a link.
Can you help me to learn more?
(Another definition for paratrooper that I've seen is " Airborne soldier".)