Editors. "Defensive anti-Catholic alliance of Weimar formed". The Literary Encyclopedia. First published 01 November 2010
[http://www.litencyc.com/php/stopics.php?rec=true&UID=14397, accessed 24 April 2014.]
Protestant rulers, Philip Landgrave of Hesse and the Elector John of Saxony, form a defensive alliance of Weimar and mobilise troops in preparation to withstand a Catholic attack.