Say soldiers get into trouble (7)
I believe the answer is:
mention
'say' is the definition.
(I know that mention is a more specific form of the action say)
'soldiers get into trouble' is the wordplay.
'soldiers' becomes 'men' (men can mean a group of soldiers).
'get' means one lot of letters goes inside another.
'trouble' indicates anagramming the letters.
'into' is an anagram of 'ntio'.
'men' going around 'ntio' is 'MENTION'.
(Other definitions for mention that I've seen before include "Passing reference" , "Remark" , "Speak of - refer to" , "Acknowledge" , "Briefly refer to (something)" .)