Complex sentence: He hastily levied some Pakhtun irregular troops, and together with some Sikh regiments, defeated Mulraj's army near the Chenab River on 18 June and drove them back to the city but was unable to attack the fortified city itself.
Split into simpler sentences: He hastily levied some Pakhtun irregular troops, and together with some Sikh regiments, defeated Mulraj's army near the Chenab River on 18 June. He drove them back to the city but was unable to attack the fortified city itself.