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World War I: The Zimmerman Telegram

Related Article: Learn more about World War I.

The German decision to sink all British boats, hostile or not, led to the death of several Americans and a change in attitudes about entering the war.

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World War I: U-Boat Blockade (1:15)

Mutual blockades by Germany and Britain devastated the populations of both countries.

World War I: America Can't Remain Neutral (1:38)

The Allies' debts prevented the United States from staying neutral.

World War I: The Zimmerman Telegram (1:05)

The German decision to sink all British boats, hostile or not, led to the death of several Americans and a change in attitudes about entering the war.

World War I: African-Americans (0:45)

Though kept segregated from the white soldiers, African Americans served with honor in American Army.

World War I: Americans Arrive Just in Time (1:59)

The arrival of American troops helped the Allies to triumph over Germany and the Central Powers.

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The Fall of Corregidor (0:22)

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Vietnam 1966 and 1967 (2:12)

These clips are from an army public affairs film that covers the 1st Infantry Division in Vietnam from 1966 to 1967.

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From "Fortress in the Sea": Bataan Death March survivor remembers

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Our father and son team pay tribute to the bold stand made by a British brigade along the Imjin River in April, 1951.

Last Battles on the Winter Line (2:49)

Allied forces smash into some of the last strong points of the Winter Line, January 1944.

Monte Cassino: Plan of Operation (3:14)

The Allied plan to breach the Winter Line and break out toward Rome.