Aware military will secure new fund (7)
I believe the answer is:
mindful
'aware' is the definition.
(I've seen this before)
'military will secure new fund' is the wordplay.
'military' becomes 'mil' (I've seen this in other clues).
'will secure' indicates putting letters inside (inserted letters are secured).
'new' indicates anagramming the letters.
'fund' with letters rearranged gives 'ndfu'.
'mil' enclosing 'ndfu' is 'MINDFUL'.
(Other definitions for mindful that I've seen before include "Aware (of something)" , "Aware and cognizant" , "Conscious (of); remembering" , "Taking heed" , "Taking care" .)