Put into action (6)
(Other definitions for implement that I've seen before include "Put into effect; tool" , "Put into action - utensil" , "Execute" , "Tool or utensil" , "Put into operation" .)
(Other definitions for exercised that I've seen before include "Kept fit" , "Practised" , "Worked out" , "worried" .)
'put into action' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for deploy that I've seen before include "Make use of" , "Utilize" , "Nun's headdress" , "Distribute strategically" , "Put in position ready for battle" .)
(Other definitions for execute that I've seen before include "Carry out - official killing?" , "Guillotine" , "Discharge" , "Kill someone" , "Inflict capital punishment upon" .)