On 28 June 1919, the Treaty of Versailles was signed in the Hall of Mirrors at the Palace of Versailles, marking the formal conclusion of the state of war between Germany and the Allied Powers, including Britain. This historic agreement was the primary outcome of the Paris Peace Conference and sought to establish a new international order following the devastation of the First World War.

The treaty imposed a comprehensive set of conditions upon Germany, which significantly influenced the political and economic landscape of interwar Europe. These terms were designed to restrict German military capacity, reconfigure national borders, and address the issue of war reparations. The resulting geopolitical shifts and the perceived severity of the requirements would go on to play a critical role in the international relations of the following two decades.

Key aspects of the treaty included:

• The formal cessation of hostilities between Germany and the Allied nations.
• The imposition of significant territorial losses on the German state.
• Strict limitations placed upon the size and capability of the German military.
• The requirement for Germany to accept responsibility for the conflict and pay financial reparations.
• The establishment of the League of Nations to promote international cooperation and prevent future global conflicts.

For Britain, the treaty represented a complex attempt to balance the desire for a lasting peace with the need to manage the recovery of a continent scarred by years of industrialised warfare. While it brought an official end to the fighting, the long-term impact of the treaty remained a subject of intense debate, as the challenges of enforcing its provisions became increasingly apparent throughout the 1920s and 1930s.