who was he?
He was Elector of Saxony.
Augustus II the Strong
was Elector of Saxony 
where was battle of warsaw fought? It was fought near Warsaw, Poland. who was it fought between? Augustus II the Strong and Stanisław Leszczyński and their allies who won it? Augustus II the Strong
wiki:11713892
Augustus II the Strong [SEP] Introduction
Augustus II the Strong (; ; ; 12 May 16701 February 1733), also known in Saxony as Frederick Augustus I, was Elector of Saxony from 1697, Imperial Vicar and elected King of Poland and Grand Duke of Lithuania in the years 1697–1706 and from 1709 until his death in 1733. He was succeeded by his son, Augustus III of Poland. Augustus' great physical strength earned him the nicknames "the Strong", "the Saxon Hercules" and "Iron-Hand". He liked to show that he lived up to his name by breaking horseshoes with his bare hands and engaging in fox tossing by holding the end of his sling with just one finger while two of the strongest men in his court held the other end.