Trap soldiers, all taking off to defensive position (6,9)
I believe the answer is:
bunker mentality
'defensive position' is the definition.
The definition suggests a singular noun which matches the answer.
'trap soldiers all taking off' is the wordplay.
I cannot really understand how this works, but
'trap' could be 'bunker' (synonyms) and 'bunker' is found in the answer.
'soldiers' could be 'men' (men can mean a group of soldiers) and 'men' is found in the answer.
This explanation may well be incorrect...
'to' acts as a link.
Can you help me to learn more?
(Other definitions for bunker mentality that I've seen before include "employed by one in a trap?" , "Carry on ignoring everyone" , "Defensive way of thinking" , "Stategy to avoid unpleasant realities" , "employed by golfer in sand?" .)