In group covered by endless amnesty, travelling north (2,5)
I believe the answer is:
en masse
'in group covered by endless amnesty travelling north' is the definition.
I can't tell whether this defines the answer.
'covered by endless amnesty travelling north' is the wordplay.
'covered by' says the answer is hidden in the clue.
'travelling north' is a reversal indicator (in a down clue, letters go up).
'essamne' is hidden in the letters of 'endless amnesty'.
'essamne' in reverse letter order is 'EN MASSE'.
Can you help me to learn more?
(Other definitions for en masse that I've seen before include "as a bunch" , "As a body (Fr.)" , "In a group U altogether" , "In force" , "Many as one" .)