Editors. "French troops cross Rhine to invade south Germany, Austria and Bohemia". The Literary Encyclopedia. First published 01 April 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=17450, accessed 17 April 2014.]
French troops cross the River Rhine in order to invade south Germany, Austria and Bohemia, and do so without a formal declaration of war.