4 August, 1914.
Late summer 1940
The 8th of December 1941 was the date that the US joined world war 2
AnswerGermany violated Belgium neutrality and France and England were allied.
Nothing they were not involved in the War before that.
Britain forgave Germany after the war
which war
Britain Joined WWII because Hitler would not withdraw his troops from Poland so Neville Chamberlain declared war.
02 Sept 1945
Reasons for Australia's InvolvementAustralia was a colony of Great Britain.
Britain's involvement in the war led to the involvement of Canada, because it's a Commonwealth Nation.
really not much although they did supply things like food and ammo to Britain
Late summer 1940
Britain declared war on Germany on September 3, 1939. This declaration came shortly after Germany invaded Poland on September 1, 1939, prompting Britain and France to respond in defense of Poland. The formal declaration marked the beginning of Britain's involvement in World War II.
http://www.awm.gov.au/atwar/ww1.htm
In the Middle East and Battle for Britain against Germany and against Japan in South East Asia.
The involvement of Germany, Italy, France, Britain, Russia/USSR, and the United States. Also, Europe was the main theater of war in both conflicts.
Yes they were. They were so secret at this time that the official date of foundation was some years later.