battle cry is a noun meaning "a yell intended to rally a group of soldiers in battle". It carries 2 recorded senses.
a yell intended to rally a group of soldiers in battle
a slogan used to rally support for a cause
“a cry to arms”
“our watchword will be `democracy'”
Definitions, synonyms and semantic relations for battle cry come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.