Appearance of first person saved by soldiers (4)
I believe the answer is:
mien
'appearance' is the definition.
(I've seen this before)
'first person saved by soldiers' is the wordplay.
'first person' becomes 'I' (first-person pronoun).
'saved by' is an insertion indicator (I've seen this in other clues).
'soldiers' becomes 'men' (men can mean a group of soldiers).
'i' going within 'men' is 'MIEN'.
'of' is the link.
(Other definitions for mien that I've seen before include "Dignified manner" , "Facial expression sounds miserly" , "person's look" , "Appearance, bearing" , "A manner like mine" .)