when did the united kingdom entered world war 2
1939
title: World War II text: September 1939, Germany invaded Poland after having staged several false flag border incidents as a pretext to initiate the attack. The Battle of Westerplatte is often described as the first battle of the war. The United Kingdom responded with an ultimatum to Germany to cease military operations, and on 3 September, after the ultimatum was ignored, France, the United Kingdom, Australia, and New Zealand declared war on Germany. This alliance was joined by South Africa (6 September) and Canada (10 September). The alliance provided no direct military support to Poland, outside of a cautious French probe into the Saarland. The title: Military history of the United Kingdom during World War II text: custody. Peace feelers were put out to the Allies. However, the invasion of Italy still proceeded. On 3 September 1943, the first attacks were made directly across the Straits of Messina by Eighth Army in Operation Baytown. V and XIII Corps carried out that attack. Montgomery's forces leap-frogged up the toe of Italy over the next few days. A subsidiary landing, Operation Slapstick, was also made on 9 September at the Italian naval base of Taranto by the 1st Airborne Division. Also on 3 September, King Victor Emmanuel and Marshal Pietro Badoglio secretly signed an armistice with the Allies. On title: Military history of the United Kingdom during World War II text: Military history of the United Kingdom during World War II The United Kingdom, along with most of its Dominions and Crown colonies declared war on Nazi Germany in September 1939, after the German invasion of Poland. War with Japan began in December 1941, after it attacked British colonies in Asia. The Axis powers were defeated by the Allies in 1945. For the domestic history see home fronts during World War II and Timeline of the United Kingdom home front during World War II. Although the UK had increased military spending and funding prior to 1939 in response to the increasing title: World War II text: by Germany. The Battle of Britain began in early July with Luftwaffe attacks on shipping and harbours. The United Kingdom rejected Hitler's ultimatum, and the German air superiority campaign started in August but failed to defeat RAF Fighter Command. Due to this the proposed German invasion of Britain was postponed indefinitely on 17September. The German strategic bombing offensive intensified with night attacks on London and other cities in the Blitz, but failed to significantly disrupt the British war effort and largely ended in May 1941. Using newly captured French ports, the German Navy enjoyed success against an over-extended Royal Navy, title: World War II by country text: Union. Ukraine was part of the Soviet Union during World War II. So see this article's section on the Soviet Union. The United Kingdom was one of the original Allies, entering the war in 1939 to honour its guarantees to Poland. After the fall of France, the United Kingdom was the only Allied nation left in Europe until the invasion of Greece. It remained the only one of the Big Three in the war until 1941 when the Soviet Union was invaded. The United Kingdom was heavily engaged in the Western European, Atlantic, Mediterranean, African and South East Asian theatres,