This vision gave Pyrrhus great assurance, and leading his army with all speed through the intervening districts he took possession of Beroea; then, stationing the greater part of his forces there, he proceeded to subdue the rest of the country through his generals. When Demetrius heard of this, and became aware of a pernicious uproar in his camp on the part of the Macedonians, he was afraid to lead them farther on, lest on coming into the neighbourhood of a Macedonian king of great renown they should go over to him.
Edition :
Plutarch Lives IX: Demetrius and Antony, Pyrrhus and Caius Marius, Ed. Jeffrey Henderson, trans. Bernadotte Perrin (The Loeb Classical Library 101), Harvard University Press: Cambridge/MA - London 1968 (first ed. 1920).
Remark :
victim: We assume Pyrrhus' generals met some resistance from garrisons stationed there by Demetrius. date: The date is taken from the New Pauly.
http://referenceworks.brillonline.com/entries/brill-s-new-pauly/lysimachus-e714860 long-term consequence: Demetrius wants to fight back, but his army goes over to Pyrrhus. This is mentioned in Pyrrhus 11.4-5.
