Seleucus' wars took him as far as India, where, after two years of war (305-303 BC), he made peace with the Indian Emperor Chandragupta Maurya. Seleucus exchanged his eastern satrapies in the Indus River Valley for 500 war elephants. These would play a decisive role against Antigonus at the Battle of Ipsus in 301 BC and against Lysimachus at the Battle of Corupedium in 281 BC.