Like clockwork soldier? (7)
I believe the answer is:
regular
This might be a double definition.
'like clockwork' is the first definition.
Although both the answer and definition are singular nouns, I can't see how one could define the other.
'soldier?' is the second definition.
(member of the regular army)
Can you help me to learn more?
(Other definitions for regular that I've seen before include "Habitual or symmetrical" , "Perishes" , "Recurring in a uniform manner, say pulse" , "Serviceman" , "Recurring at short uniform intervals" .)