Mando fighting wanderer (5)
I believe the answer is:
nomad
'wanderer' is the definition.
(I know that Nomad is a type of wanderer)
'mando fighting' is the wordplay.
'fighting' indicates an anagram (I've seen this in other clues).
'mando' with letters rearranged gives 'NOMAD'.
(Other definitions for nomad that I've seen before include "Person of no fixed abode" , "One travels from place to place with no permanent home" , "One keeps moving" , "drifter" , "A wandering tribesman" .)