Facts: - battles label: wars - battles: byzantine conquest of bulgaria - allegiance: byzantine empire - death date: after 1028 - serviceyears: ca. 1000 -- 1022 - birth date: before ca. 980 - name: nikephoros xiphias - relations: alexios xiphias -lrb- father -rrb- - rank: '' strategos '' Based on these bullet points, write a short biography describing the life of nikephoros xiphias .
A:
nikephoros xiphias -lrb- , -rrb- was a byzantine military commander during the reign of emperor basil ii .he played a distinguished role in the byzantine conquest of bulgaria , and was instrumental in the decisive byzantine victory at the battle of kleidion in 1014 .in 1022 he led an unsuccessful rebellion against basil ii , and was disgraced , tonsured and exiled .he is last mentioned in 1028 , when he was recalled from exile and retired to a monastery .