Complex sentence: Gulab Singh was impressed by Zorawar's sincerity and appointed him commandant of Reasi ---as promised the Rajput youth fulfilled his task and his grateful ruler made him commissariat officer of all forts north of Jammu.
Split into simpler sentences: Gulab Singh was impressed by Zorawar's sincerity and appointed him commandant of Reasi. As promised the Rajput youth fulfilled his task and his grateful ruler made him commissariat officer of all forts north of Jammu.