In 1030, King Olav had the bard Tormod Kolbrunarskald recite the Bjarkamál to rouse his outnumbered army in the morning before the start of the Battle of Stiklestad, according to Fóstbrœðra saga.
The nyktomakhi is of about the same length as Bjarkamál, and containing the same elements: The Trojan horse/the smuggling of Swedish weapons; Danes/Trojans are sound asleep when Swedes/Greeks attack them; plus the climax: The goddess Venus informs Æneas that it is the will of the gods themselves (that is, Jupiter, Juno, Minerva and Neptune) that Troy shall fall, and so he can honourably flee.
[2] A well-known example of the old Norse faith in fylgjur, is Bjarke in Bjarkamál lying fast asleep in the hall, while his fylgja (doppelgänger in animal shape), the bear, is fighting on his behalf outside.
Non ego virgineos iubeo cognoscere ludos nec teneras tractare genas aut dulcia nuptis oscula conferre et tenues astringere mammas, non liquidum captare merum tenerumve fricare femen et in niveos oculum iactare lacertos.
Bello opus est nec amore levi, nihil hic quoque facti mollities enervis habet; res proelia poscit.