On the morning of September 1st, 1939 the world would forever change when the German Reich under Adolf Hitler declared war on its neighbor Poland. For the past three years, Hitler had been mobilizing his army and expanding his borders. In 1938 Hitler devoured Austria and in 1939 German troops marched into Czechoslovakia without any resistance from France or the United Kingdom. Because of this Hitler assumed the allied nations would not interfere with his conquest of Poland, but this time... they did. On September 3rd Britain sent an ultimatum to Germany demanding an immediate end to the hostilities against Poland, however, Hitler ignored it.