What are join forces?

Famous quotes containing the words join and/or forces:

    Don’t join the book burners. Don’t think you are going to conceal faults by concealing evidence that they ever existed.
    Dwight D. Eisenhower (1890–1969)

    Yesterday, December 7, 1941Ma date that will live in infamy—the United States of America was suddenly and deliberately attacked by naval and air forces of the Empire of Japan.
    Franklin D. Roosevelt (1882–1945)