[3] Armstrong was named after his great uncle Hamilton Fish who was Secretary of State in the Ulysses Grant administration.

[3] During the First World War, he was a military attaché in Serbia, sparking a lifelong interest in American relations with foreign states.

Armstrong changed the name of the magazine from the Journal of International Relations, which he found “unnecessarily dull” into Foreign Affairs.

[4] After Coolidge's death in 1928, Armstrong became editor, retiring from the position only in 1972, the fiftieth year of publication of the journal.

[3] Armstrong wrote early of the repression of political opposition underway in Germany, as well as the persecution of Jews.

[4] Armstrong wrote many books, including the early Hitler's Reich: The First Phase (published in July, 1933, by The Macmillan Company).

Hamilton Fish Armstrong was decorated by Serbia, Romania, Czechoslovakia, France, and the United Kingdom: He received honorary degrees from Brown (1942), Yale (1957), Basel (1960), Princeton (1961), Columbia (1963), and Harvard (1963) universities.