1599, Duke Charles had control over the entire country. When he asked the Riksens ständer at Linköping in 1600 for support as regent, it answered by proclaiming him king. He did not begin to use the title himself however, under the name Charles IX, until 1603. This Riksens ständer also appointed a court to judge those aristocrats who had fought with Sigismund in the battle. Eight were sentenced to death; five of the executions were carried out. This event, at the main square of Linköping on 20 March 1600, is known as the Linköping Bloodbath. With Sigismund's loss of the Swedish crown, the Polish–Swedish union was dissolved. A deep conflict between Sweden and Poland emerged; the nations would clash many times during the Polish–Swedish War, not to be resolved until the Great Northern War. Also, most remaining Catholic elements of Swedish society were wiped out, and Sweden became one of the foremost advocates of Protestantism, not least important during the Thirty Years' War. A nine-metre monument was erected in 1898 at the battleground, immediately east of the river and close to the Stångebro sports field. See also Stångebro Linköping Bloodbath Club War, civil war between Charles and Sigismund supporters in Österland (Finland of 1596–1597) References and notes Svenska Slagfält, Wahlström & Widstrand, 2005. (chapter= Stångebro 1598/ Inbördeskrig i östergötland, pp. 83–89.) 1598 in Europe Stangebro 1598 Stangebro 1598 Stangebro 1598 Conflicts in 1598 1598 in Sweden War against Sigismund