The Ottomans defeated the Poles, who were supporting the Habsburgs in the Thirty Years' War, at the Battle of Cecora in September–October 1620, but were not able to further intervene efficiently before the Bohemian defeat at the Battle of the White Mountain in November 1620. File:Defending the Polish banner at Chocim, by Juliusz Kossak, 1892.jpg
Battle of Adrianople - Fritigern was an Arian Christian, Roman ally. A Thervingian Gothic chieftain who found he was unable to keep the Huns at bay, Fritigern asked Valens to allow his people to enter and settle in Roman territory. However, the Roman governors treated the refugees poorly, and at a feast, executed some and took others, including Fritigern, hostage. Fritigern escaped and declared war on the Roman Empire. Battle of Adrianople resulted in death of Emperor Valens.