A limit set with one bunch of soldiers (7)
I believe the answer is:
militia
'bunch of soldiers' is the definition.
'militia' can be an answer for 'soldiers' (I've seen this before). I'm not certain of the 'bunch of' bit.
'a limit set with one' is the wordplay.
'set with' is an anagram indicator (instruction to set the letters).
'one' becomes 'i' (Roman numeral).
'a'+'limit'='alimit'
'alimit' mixed up with 'i' makes 'MILITIA'.
Can you help me to learn more?
(Other definitions for militia that I've seen before include "Citizens army" , "Reservists" , "Body of civilian soldiers" , "Civilian soldier force" , "Civilian army force" .)