Complex sentence: The Battle of Adrianople occurred on April 14,1205 between Bulgarians under Tsar Kaloyan of Bulgaria, and Crusaders under Baldwin I. It was won by the Bulgarians after a skillful ambush using the help of their Cuman and Greek allies.
Split into simpler sentences: The Battle of Adrianople occurred on April 14,1205 between Bulgarians under Tsar Kaloyan of Bulgaria, and Crusaders under Baldwin I. It was won by the Bulgarians. The battle was won by the Bulgarians after a skillful ambush using the help of their Cuman and Greek allies.