I'm reading up on the Thirty Years War and in 1618 or 19 the Ottomans sultan promised "significant aid" to Bohemia and the Protestants. I also know the Turks sent troops to Transylvania when Transylvania joined the war. What ever came of that army and the promised aid to the Protestants? Was that army it? I know the Turks had to deal with Poland and Persia around that time.