Complex sentence: In circa 600, he was appointed as the Exarch of Africa and in 608, Heraclius the Elder rebelled with his son against the usurper Phocas (r.602--610).
Split into simpler sentences: In circa 600, he was appointed as the Exarch of Africa. In 608, he rebelled with his son against the usurper Phocas (r.602--610).