Stand for some soldiers at show (9)
I believe the answer is:
represent
'stand for' is the definition.
(stand for can mean to represent or denote)
'soldiers at show' is the wordplay.
'soldiers at' becomes 're' (I can't explain this - if you can you should give a lot more credence to this answer).
'show' becomes 'present' (presenting is a kind of showing).
're'+'present'='REPRESENT'
'some' is the link.
Can you help me to learn more?
(Other definitions for represent that I've seen before include "Portray" , "show" , "Stand for or symbolise" , "Serve as a symbol for" , "Play the part" .)