Complex sentence: With at least 70,000 soldiers, Shivaji paid a surprise visit to Shahistekhan in Khan's military camp at Pune under the cover of darkness kill Khan and thus demoralize his army.
Split into simpler sentences: With at least 70,000 soldiers, Shivaji paid a surprise visit to Shahistekhan in Khan's military camp at Pune under the cover of darkness. The objective was to kill Khan and thus demoralize his army.