By looking at the Naval Arms Race, the People’s Revolt in Austria-Hungary and European alliances, it can be shown that national interest was a significant factor in contributing to World War One.
Some immediate causes were the assassination of the heir of Austria-Hungry, Germany declaring war on Russia, Germany declaring war on France, and Great Britain declaring war on Germany.
Many who lived to see the horrendous times of World War 2 have used this phrase to achieve both these ends, for it gives them some small comfort to think that there is some grandiose and powerful meaning behind the happening s of this tragedy.
The Russian army had great numbers of tanks and aircraft when the Germans attacked, but most of the tanks were obsolete, and the political mass murder of most senior officers by Stalin's brutal Communist regime before the war and the extreme rigidness it enforced on the surviving officers had paralyzing results.
The immediate cause of the World War I was the June 28, 1914 assassination of Archduke Franz Ferdinand, heir to the Austro-Hungarian throne, by Gavrilo Princip, a Bosnian Serb citizen of Austria-Hungary and member of the Black Hand.
It was a dictum exacted by victors from vanquished, under the influence of the blindness, ignorance, hatred, and the propagandist misconceptions to which war had given rise.” (Fay, The Origins of the World War)...
The Holocaust was perhaps the most dramatic and well known atrocity of World War II because of the sheer number of deaths and crimes that had to be put on trial in Nuremburg....
It made Cavalry totally obsolete, and made infantry quite helpless in an open battlefield unless they were massively equipped with efficient anti-tank weapons which were developed only in response to Blitzkrieg and really matured only near the end of World War 2.
When a Mosquito group commander said "It's quite clear that the value of the Mosquito to the war effort is significantly greater than that of any other aircraft" it was not an overstatement.
Although he was just a Corporal in World War 1, Hitler had good and creative military perception, both tactical and technical, and so when he observed a combined exercise of tanks and motorized infantry led by Guderian shortly after he came to power, he immediately understood that he found his military tool.
As with many other weapons and tactics, it could be greatly intensified with quality, and indeed with Cavalry-spirit commanders like Guderian and Rommel, with highly trained or combat experienced soldiers, and with excellent weapons as the Panzer IV and the Stuka dive bomber, the Germans were able to achieve amazing victories with Blitzkrieg.
Later during the war the Germans were eventually matched by equal armor commanders like Patton and Zhukov.
Hitler needed the right tool for his grand war plans, something that would make his future war very different from World War 1, and will fully exploit the German advantages in military professionalism and industry.
And the Stuka dive bomber was matched by superb tactical support aircraft like the Russian Il-2 Sturmovik which was the most armored aircraft in World War 2, and later by a new breed of American and British multi-role fighter-bombers.
The 2nd factor was that while so many countries conveniently believed in pacifism after the bloodshed of World War 1, Germany's new leader since 1933, Adolf Hitler, intended to go to a major war again, and as soon as possible, and he pushed the German military back in full shape, ignoring the peace treaty's limitations and spending a huge portion of the budget on re-armament.
This was such a bad war because everyone in the world has allies, and the allies are in oath to help there ally when things get rough or that country is going to war.