Schmalkaldic War
The Schmalkaldic War (German: Schmalkaldischer Krieg) was the short period of violence from 1546 until 1547 between the forces of Emperor Charles V of the Holy Roman Empire (simultaneously King Charles I of Spain), commanded by the Duke of Alba and the Duke of Saxony, and the Lutheran Schmalkaldic League within the domains of the Holy Roman Empire.
For the 1552 Princes' Revolt, see Second Schmalkaldic War.