You are using an out of date browser. It may not display this or other websites correctly. You should upgrade or use an alternative browser.
alternatehistory.com
In OTL, the Polish King Wladyslaw IV came up with a plan for a war against Turkey over the west coast of the Black Sea. The Senate voted the war down. Such a war would have involved battle ready Cossacks in plunder of Turkish lands and perhaps unified the Commonwealth against an external enemy. Could the Poles-Lithuanians-Cossacks have marched as far south as Bulgaria? Some Polish magnates did have dreams of a Crusade to liberate Constantinople...