Complex sentence: He then lets his rifle drop to the street below, thus making the other sniper believe he has killed the protagonist.The other Sniper believes he has killed the protagonist As the Free State sniper begins to leave, the IRA sniper shoots him dead with a revolver.
Split into simpler sentences: He then lets his rifle drop to the street below, thus making the other sniper believe he has killed the protagonist. The Free State sniper begins to leave, and the IRA sniper shoots him dead with a revolver.