Complex sentence: Tipu first ordered two of his kushoons to advance and take over the defences which they accomplished with valour.But at day-break, the Travancoreans broke down the retaining wall, letting the water flood onto the Mysorean forces.
Split into simpler sentences: Tipu first ordered two of his kushoons to advance and take over the defences which they accomplished with valour. At day-break, the Travancoreans broke down the retaining wall, letting the water flood onto the Mysorean forces.