Frederick I Barbarossa: Did you mean...?

The Empire of Nicaea was a successor state to the Byzantine Empire, or rather a Byzantine Empire in exile lasting from 1204 to 1261 CE. The Empire of Nicaea was founded in the aftermath of the sacking of Constantinople during the Fourth Crusade...

Thomas Müntzer (l. c. 1489-1525) was a German theologian and apocalyptic preacher who became one of the leaders of the German Peasants' War (1524-1525). An early follower of the reformer Martin Luther (l. 1483-1546), Müntzer established his...

The Siege of Acre, located on the northern coast of Israel, was the first major battle of the Third Crusade (1189-1192 CE). The protracted siege by a mixed force of European armies against the Muslim garrison and nearby army of Saladin, the...

Battle of Prague, 6 May 1757, illustration by unknown artist, c. 1760. This illustration depicts Prussian troops, led by King Frederick II of Prussia, driving back the Austrian troops into Prague. The Battle of Prague was one of the largest...

Saladin (1137-93) was the Muslim Sultan of Egypt and Syria (r. 1174-1193) who shocked the western world by defeating an army of the Christian Crusader states at the Battle of Hattin and then capturing Jerusalem in 1187. Saladin all but destroyed...

Abolitionist author, orator and statesman Frederick Douglass (1818-1895) is well-known for his speeches, autobiography, and other works addressing the issue of slavery in the United States in the 19th century, but, in 1853, he wrote his only...

The Grand Embassy was the name given to the long Western European tour that Tsar Peter I of Russia (aka Peter the Great, r. 1682-1725) undertook during 1697-1698. Peter was joined by hundreds of people, including noblemen, his friends, volunteers...

The Kingdom of Jerusalem was a state created in 1099 CE by Crusaders and western settlers after the First Crusade (1095-1102 CE). With Jerusalem as its capital, the kingdom was the most important of the four Crusader States in the Middle...

Blitzkrieg ('lightning war') is a military tactic combining air and land forces deployed at speed against the enemy's weaker points while the rear lines are simultaneously disrupted by acts of sabotage and bombing. Speed, concentration, and...

Rudolf Hess (1894-1987) was deputy leader of the German Nazi Party and a key figure in the fascist regime of Adolf Hitler (1889-1945) until his bizarre decision in 1941 to fly to Scotland. Hess believed he could persuade Britain to withdraw...