An unfailing water-supply ought to be a definitely recognized necessity in every military post subject to beleaguerment.
"The Story of Old Fort Loudon"
Charles Egbert Craddock
Then swift he hasteneth downward, lest day be wholly spent Ere he come to the gate well warded, and the walls' beleaguerment; For his heart is eager to hearken what men-folk therein dwell And the name of that noble dwelling, and the tale that it hath to tell.
"The Story of Sigurd the Volsung and the Fall of the Niblungs"
William Morris