Provide better weapons for military at back, munitions at the outset (5)
I believe the answer is:
rearm
'provide better weapons for military' is the definition.
I can't judge whether this definition defines the answer.
'at back munitions at the outset' is the wordplay.
'at' means one lot of letters go next to another.
'back' becomes 'rear' (something's rear is its back).
'at the outset' indicates taking the first letters (the outset is the beginning).
The initial letter of 'munitions' is 'm'.
'rear' next to 'm' is 'REARM'.
Can you help me to learn more?
(Other definitions for rearm that I've seen before include "prepare for another war" , "prepare to fight again" , "Increase weaponry" , "Acquire new or better weapons" , "Resupply with weapons" .)