Editors. "Wallenstein requires lieutenants to sign a declaration of loyalty". The Literary Encyclopedia. First published 01 February 2011
[http://www.litencyc.com/php/stopics.php?rec=true&UID=16074, accessed 21 May 2013.]
In the wake of suspicions held against him by Emperor Ferdinand II, imperial military commander Wallenstein now demands all his lieutenants to sign a declaration of loyalty to him.