Battle cry

A Battle cry is a loud shout, slogan, or phrase used to encourage, unite, and motivate people, especially before or during a fight, competition, or challenge.

Examples:

Soldiers might shout a battle cry before charging into battle.

Sports teams often have battle cries to boost team spirit.

Groups or movements may use a battle cry to rally supporters.

Common battle cries;

"Charge!"

"For the King!"

"Victory or death!"

"Let's go!"

"No surrender!"

Figurative meaning

Today, "battle cry" is often used metaphorically to mean a rallying call for a cause or goal.

Example:

"Education for all became the battle cry of the Reform movement."

So, a battle cry is essentially a powerful shout or slogan that inspires people to act together with courage and determination.