Complex sentence: In 986 he raided the Indian frontier, and in 988 defeated Jaipal with his allies at Laghman, and soon after possessed himself of the country up to the Indus, placing a governor of his own at Peshawar.
Split into simpler sentences: In 986 he raided the Indian frontier, and in 988 defeated Jaipal with his allies at Laghman. Soon afterwards he took control of the country as far as the Indus, placing a governor of his own at Peshawar.