The service I care for quite ridiculously (3,5)
I believe the answer is:
air force
'quite ridiculously' is the definition.
I can't tell whether this definition defines the answer.
'the service i care for' is the wordplay.
'the service' indicates an anagram (I've seen 'serviced' mean this (to service can mean to repair)).
'i'+'care'+'for'='icarefor'
'icarefor' anagrammed gives 'AIR FORCE'.
Can you help me to learn more?
(Other definitions for air force that I've seen before include "one of the services" , "Kind of blue" , "Simple tune for church service" , "Junior service" , "A country's flying service" .)