Complex sentence: Satank attempted escape and was killed while traveling to Fort Richardson for trial: he began singing his death song, and managed to wrestle a rifle from one of his guards, and was shot to death before he could manage to fire.
Split into simpler sentences: Satank attempted escape and was killed while traveling to Fort Richardson for trial. He began singing his death song, and managed to wrestle a rifle from one of his guards, and was shot to death before he could manage to fire.