Soldier on manoeuvres peers around at all times (9)
I believe the answer is:
persevere
'soldier on' is the definition.
(I've seen this before)
'manoeuvres peers around at all times' is the wordplay.
'manoeuvres' is an anagram indicator.
'around' indicates putting letters inside.
'at all times' becomes 'ever' ('ever' can be a synonym of 'at all times').
'peers' is an anagram of 'perse'.
'perse' placed around 'ever' is 'PERSEVERE'.
(Other definitions for persevere that I've seen before include "Remain" , "Serve peer (anag.)" , "Continue - stick to one's guns" , "Keep trying" , "Carry on regardless" .)