Battle of the Allia
The Battle of the Allia was a battle fought between the Senones – a Gallic tribe led by Brennus who had invaded northern Italy – and the Roman Republic . 
<triplet> Battle of the Allia <subj> Gallic <obj> participant <subj> Roman Republic <obj> participant <triplet> Senones <subj> Gallic <obj> part of <triplet> Brennus <subj> Senones <obj> ethnic group