Gather there is a marked recovery (5)
I believe the answer is:
This could be a double definition.
'gather' is the first definition.
(rallying is a kind of gathering)
'a marked recovery' is the second definition.
'rally' can be an answer for 'recovery' (rally is a kind of recovery). I am unsure of the 'a marked' bit.
'there is' is the link.
Can you help me to learn more?
(Other definitions for rally that I've seen before include "Get better; car meet", "Exchange of shots (tennis)", "recovery", "Revive - assembly", "Marshal".)