Imam Husayn’s refusal to accept the tyrant Yazid’s allegiance triggered the Battle of Karbala on the Day of Ashura. Imam Husayn, grandson of Prophet Muhammad, along with his family members and companions, were martyred on the plains of Karbala, and this marks a turning point for Shi‘a Muslims. Year after year, millions of people worldwide commemorate this tragedy to express their sorrow and remind themselves to firmly stand against oppression as Imam Husayn did. This article focuses on the Imam’s bravery and steadfastness as seen in his encounters with the enemy, his sermons to all people, and on the battlefield.