On this day, March 7, 1938, Adolf Hitler violated the Versailles Treaty by sending German troops into the demilitarized Rhineland area along the Rhine River in western Germany. This action not only breached the treaty but also the Locarno Pact, signalizing Hitler's intentions of disregarding international agreements and asserting Germany's military power once again. The occupation of the Rhineland was a direct challenge to the post-World War I peace framework established in 1919 and illustrated Hitler's aggressive expansionist policies.

The Versailles Treaty, signed in July 1919, imposed heavy reparations and strict conditions on the defeated Germany following World War I. These terms, including significant military restrictions, aimed to diminish Germany's ability to wage war and were meant to provide lasting peace in Europe. However, the treaty was met with resentment within Germany, and Hitler used this discontent as a means to gain public support for his policies, leading to significant military rearmament and eventually paving the way for the aggressive foreign policy that triggered the Second World War.

By remilitarizing the Rhineland, Hitler effectively dismantled the peace established by the Versailles Treaty and demonstrated a willingness to challenge the international order. This move not only encouraged further territorial ambitions in Europe but also showcased the failure of the League of Nations to enforce peace agreements. As a result, this day marks a significant moment in history that contributed to the escalation of tensions leading to World War II, as countries began to realize the implications of Hitler's defiance against established treaties.