Philosopher no different to some soldiers (7)
I believe the answer is:
platoon
'some soldiers' is the definition.
(group of soldiers)
'philosopher no different' is the wordplay.
'philosopher' becomes 'plato' (Plato is an example).
'different' indicates anagramming the letters (letters placed in a different order).
'no' with letters rearranged gives 'on'.
'plato'+'on'='PLATOON'
'to' acts as a link.
(Other definitions for platoon that I've seen before include "Military squad" , "Group under lieutenant" , "Group of soldiers" , "Sub-unit of a military company" , "Soldiers under lieutenant" .)