Note 525 — Chapter XVI · SOCIETY IN THE HEROIC AGE.
Reading edition
κρῖν' ἄνδρας κατὰ φῦλα, κατὰ φρήτρας, Ἀγάμεμνον, ὡς φρήτρη φρήτρηφιν ἀρήγῃ, φῦλα δὲ φύλοις.
Cf. Tacitus, Germ. 7: quodque praecipuum fortitudinis incitamentum est, non casus nec fortuita conglobatio turmam aut cuneum facit sed familiae et propinquitates. But the context shows that the conditions here are of a totally different character from those in the Iliad.