20th Century Before World War II
| Start | Finish | Conflict | Combatants | Fatalities |
| 1910 | 1918 | Border War | United States - Mexico | 100+ |
| 1932 | 1935 | Chaco War | Bolivia - Paraguay | ~100,000 |
| 1938 | 1938 | Battle of Lake Khasan | Soviet Union – Japan | ~1,300 |
| 1939 | 1939 | Slovak–Hungarian War | Slovakia – Hungary | 66 |
| 1939 | 1939 | Battle of Khalkhin Gol | Soviet Union and Mongolia – Japan and Manchukuo | ~16,000 |
Read more about this topic: List Of Border Conflicts
Famous quotes containing the words world and/or war:
“People always ask us, “Are things better or worse today?” Well, some things are better and some things are worse.... But there are a lot of problems in the world today that no one dreamed of when we were young. For instance, this business about the environment. Why, clean water was just something you took for granted.”
—Sarah Delany (b. 1890)
“The war on privilege will never end. Its next great campaign will be against the privileges of the underprivileged.”
—H.L. (Henry Lewis)