Company or body of soldiers, from what we hear (6)
I believe the answer is:
troupe
'company' is the definition.
(I know that company can be written as troupe)
'body of soldiers from what we hear' is the wordplay.
'body of soldiers' becomes 'troop' (I've seen this before).
'from what we hear' shows a homophone (sound like).
'troop' is a homophone of 'TROUPE'.
'or' acts as a link.
(Other definitions for troupe that I've seen before include "Group of touring players" , "Cast" , "A company of actors or acrobats" , "Group of travelling actors" , "Group of touring actors" .)