U-boats were German submarines that caused havoc in World War Two during the Battle of the Atlantic. U-boats were so damaging that Winston Churchill commented that it was the only time in World War Two. The Treaty of Versailles had forbidden Germany from having any submarines. Germany had a well respected short history of submarine building. According to the author "Crews also trained in anti-submarine warfare (which Versailles did not forbid) in Germany and the very nature of this meant that they had to gain knowledge of submarines themselves".
On December 29, 2014, the Consolidated B-24 Liberator, one of the most famous bombers of World War II, turned 75 years old. More than 18,400 of this type were built, making it the most produced American wartime aircraft. It gained a distinguished war record with operations in the European, Pacific, African and Middle Eastern theaters. According to the author, " A contract was awarded in March 1939 for an additional wooden mockup, one wind tunnel test model and one XB-24 airplane". There was a requirement that the airplane had to be ready before the end of the year and Consolidated just met the deadline when the first prototype made its inaugural flight on December 29, 1939.
The North African Campaign began in June of 1940. Troops approach a German-held strong point under the protection of a heavy smoke screen somewhere in the Western Desert, in Northern Africa on November 27, 1942. Allied forces pushed each other back and forth across the desert. At the beginning of the war, Libya had been an Italian colony for several decades and British forces had been in neighboring Egypt since 1882. According to the author, "The two armies began skirmishing almost as soon as Italy declared war on the Allied Nations in 1940".
The D-Day war started on Tuesday, 6 June 1944. D-Day in invasion of Normandy during World War II. American and British troops fight to free France. According to the author, "Germany had invaded France and was trying to take over all of Europe including Britain". More than 158,000 men landed on D-Day itself, the first of a total invasion force of 2 million.