On this day, 90 years ago, on June 18, 1935 (May 18, 1935 in the lunar calendar), Germany and Britain signed the Naval Agreement. After coming to power, Hitler began to rearm. In March 1935, he announced the implementation of universal compulsory military service and tore up the Treaty of Versailles. Britain, France and Italy signed the "Agreement of Streza" on April 14 to oppose the rearming of Germany, and the League of Nations also protested against Germany. However, on June 18, 1935, Britain and Germany signed a naval agreement, stipulating that the ratio of the total tonnage of the British and German navies should be 100:35. It also allowed the tonnage of German submarines to reach 45% of the United Kingdom's. Even if this percentage exceeded, the United Kingdom only needed to be notified. This means that the submarine tonnage of the two countries can be balanced, and it means that Germany can have a fleet as strong as France. Through this agreement, Britain took the lead in agreeing to rearm Germany and undermine the Streza Agreement. The League of Nations protested and failed. This was a diplomatic victory for Hitler in rearming and was of great significance to Hitler's rearming. From then on, Hitler stepped up his military expansion and preparations for war. In April 1939, after Britain allied itself with Poland, Hitler repealed the agreement.