John Armstrong Jr. was an American soldier, diplomat and statesman who was a delegate to the Continental Congress, U.S. Senator from New York, and United States Secretary of War under President James Madison. A member of the Democratic-Republican Party, Armstrong was United States Minister to France from 1804 to 1810. He was central to drawing up the Saint Lawrence Campaign plan during the War of 1812, whereby the USA would invade Canada in late 1813 and attempt to annex Montreal, a campaign which ended in abject failure for the Americans.
- Occupation
- politician, diplomat, writer, soldier
- Position held
- United States Secretary of War, United States Ambassador to France, United States senator, United States senator
- Citizenship
- United States