Final answer:
Hitler violated international policy by rearming Germany and occupying the Rhineland in 1935-36, taking actions contrary to the Treaty of Versailles, which led to increasing aggression and ultimately, World War II.
Step-by-step explanation:
In the years 1935 and 1936, Adolf Hitler began violating international policy by taking actions that were against the stipulations of the Treaty of Versailles. Notably, in 1935, Hitler announced Germany’s rearmament, which included the creation of an air force, the Luftwaffe, and other offensive weapons such as tanks and submarines that the treaty had banned.
Then, in March 1936, approximately three thousand German troops occupied the Rhineland, an area demilitarized by the treaty, a clear breach of its terms. This was followed by further aggressive actions, including the annexation of Austria in March 1938 and the occupation of the Sudetenland as per the Munich Pact later that same year.
These actions not only violated international agreements but also set Europe on a path to World War II as Hitler's ambitions could not be contained by appeasement.