Exaggerated where Tommy had to go? (4-3-3)
I believe the answer is:
over-the-top
I believe this clue is a double definition.
'exaggerated' is the first definition.
(over the top can mean exaggerated or unnecessary)
'where tommy had to go?' is the second definition.
(over the top of a trench - Tommy means a soldier)
(Other definitions for over-the-top that I've seen before include "Theatrically excessive" , "To an exaggerated degree" , "Excessively extreme" .)