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This Day in American History

March 9

1 historic event on this date

Historical1862

Battle of the Monitor and Merrimack

The USS Monitor and CSS Virginia (Merrimack) fought the first battle between ironclad warships at Hampton Roads, Virginia. The engagement revolutionized naval warfare and had strategic implications for the Union's naval blockade of Confederate ports during the Civil War.

Why It Matters

This battle demonstrated how technological innovation during the Civil War transformed military strategy, and the Union's ultimate naval superiority proved essential to preserving the republic.

Explore the Principles Behind the History

Every event in American history connects to the founding principles. Discover the ideas that shaped these moments.

View the 28 Founding Principles