George Washington Spy Code

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Illustration Spy Glass
Spy Glass Illustration

Kathryn J. Humphreys

Spy Code Mission:

General George Washington used spy codes to send important messages to his officers. The waterways played an important part in winning the Revolutionary War for the American army. Use the spy code from Washington's papers to decipher important words in this letter from General Washington to the Marquis De Lafayette, concerning trapping Lord Cornwallis at Yorktown. The French fleet of battleships blocked the Chesapeake Bay so that Lord Cornwallis had to surrender the British troops to General Washington.
Junior Ranger Spy Code
Spy Code Decoder


Headquarters, Kings Ferry, August 21, 1781

My dear Marquis:

You have the and forces needed to // // and the The must keep the // // 15.21.20 of the // 2.1.25 while you block the // from leaving the The // can be 23.15.14 if the British army does not by from

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Answer for the Spy Code

George Washington Birthplace National Monument

Last updated: January 31, 2024