Soldiers look up for overhead protection (7)
I believe the answer is:
parasol
'overhead protection' is the definition.
'parasol' can be an answer for 'protection' (parasol is a kind of protection). I am unsure of the 'overhead' bit.
'soldiers look up' is the wordplay.
'soldiers' becomes 'paras' (para is a kind of soldier**).
'look' becomes 'lo'.
'up' is a reversal indicator (in down clue: letters go upwards).
'lo' backwards is 'ol'.
'paras'+'ol'='PARASOL'
'for' acts as a link.
Can you help me to learn more?
(Other definitions for parasol that I've seen before include "aeroplane" , "for protection from the elements" , "sunblock" , "Light umbrella giving shade from sun" , "Desert Shield?" .)