The Fall of France in 1940 | English Heritage
World War I - German invasion of France | Britannica
Belgium, U.S. involvement in World War I | Article | The United States Army
Schlieffen Plan and German invasion of 1914 | NZHistory, New Zealand history online
Battle of Belgium (May 10–28, 1940) Summary & Facts
Battle of France - The Battle of Belgium, the Channel ports & the panzer breakthrough | Britannica
WW2 Dates & Timeline | Holocaust Encyclopedia
The Schlieffen Plan
Battle Of France 1940 - What You Should Know | Imperial War Museums
German invasion of Belgium (1940) - Wikipedia
German Invasion of Western Europe, May 1940 | Holocaust Encyclopedia
Battle of Belgium (May 10–28, 1940) Summary & Facts
Battle of France - Allied defenses and the German plan of attack | Britannica
German occupation of Belgium during World War I - Wikipedia
Dunkirk was a victory for morale but ultimately a humiliating military defeat
Battle of France - The Battle of Belgium, the Channel ports & the panzer breakthrough | Britannica
German invasion of Belgium (1940) - Wikiwand
World War II -- Belgium
Operation Sea Lion - Wikipedia
French war planning 1920–1940 - Wikipedia
Invasion of France and the Low Countries | World War II Database
How Churchill Led Britain To Victory In WW2 | Imperial War Museums
World War II Battles: Timeline - HISTORY
Allies of World War II - Wikipedia
Two Invasions of Belgium By Germany in Two World Wars: 1914 and 1940
German invasion of Belgium (1940) - Wikipedia
Belgium Besieged: From Blitzkrieg to Occupation - Warfare History Network
