All the same a soldier has to assume it (7)
I believe the answer is:
uniform
I believe this is a double definition.
'all the same' is the first definition.
(I've seen this before)
'a soldier has to assume it' is the second definition.
(I've seen this before)
(Other definitions for uniform that I've seen before include "Distinctive outfit" , "Unvarying kind of costume" , "Unvarying; livery" , "The clothing is always the same," , "Constant; outfit" .)