Facts:   - battles: byzantine -- arab wars    - allegiance: byzantine empire    - death date: 705      - name: heraclius    - relations: tiberius iii -lrb- brother -rrb-    - rank: '' monostrategos '' of the anatolian themes   Based on these bullet points, write a short biography describing the life of heraclius -lrb- brother of tiberius iii -rrb- .
The answer to this question is:
heraclius -lrb- , `` herakleios '' -rrb- was the brother of the byzantine emperor tiberius iii -lrb- r. 698 -- 705 -rrb- and the byzantine empire 's leading general during his reign .he scored a number of victories against the umayyads , but was unable to halt the arab conquest of armenia , nor able to prevent the deposition of his brother by justinian ii -lrb- r. 685 -- 695 and 705 -- 711 -rrb- , who later captured and executed them both .