Peacekeeping

Treaties

1919
1919
6/28/1919
1920
1920
1921
12/1921
1922
1922
2/1922
1923
4/9/1924
10/16/1925
1926
8/27/1928
6/7/1929
7/9/1932

Wars

7/28/1914 - 11/11/1918
9/1/1939 - 9/2/1945

League of Nations

1920 - 1923
1920 - 1921
1920 - 1921
1920
1/16/1920
1923
1923
1923 - 1924
1925
9/1926 - 1933
1932 - 1933
1932
1934 - 1939
1935 - 1936

Germany

3/17/1920
1923 - 1929
1923 - 1925
1/31/1933
3/1936

USA

10/29/1929
1931

Conferences

11/1921 - 2/1922
1922
1930
1932 - 1934
1935 - 1936