Army corps’s hurried to get back (7)
I believe the answer is:
restore
'get back' is the definition.
(thesaurus)
'army corps's hurried' is the wordplay.
'army corps's' becomes 'RE's' (Royal Engineers).
'hurried' becomes 'tore' (tear can mean to rush or hurry).
'res'+'tore'='RESTORE'
'to' acts as a link.
(Other definitions for restore that I've seen before include "Bring back to original state" , "Bring back to health" , "Renew, repair; give back" , "Refurbish" , "Make good, reinstate" .)