Hungary was dismembered because she could not defend herself and because her greedy neighbors decided to help themselves to the unprotected carcass. Naturally, the architects of Trianon could not admit this and therefore invented the theory of Hungary's Guilt, claiming that 1) She started the First World War and 2) She was a historical German ally and as such a destabilizing force in Europe. Neither were true.
It was the Serb para-governmental organization, Narodna Obrana, which, with the encouragement of Russia and with the goal of a Greater Serbia, assassinated Archduke Francis Ferdinand in 1914 and it was the Premier of Hungary, who alone in the Austro- Hungarian Council of Ministers, voted against a war of retaliation against Serbia.
As to the claim of being a natural German ally, history proves just the opposite. Whenever Hungary was independent, she acted as a keystone of balance between the Germanic and Slavic peoples and prevented attempts at both Pan-Germanic and Pan- Slavic expansions. In the first 500 years of her existence, starting with the battle of Lechfeld in 955, Hungary fought to block the spread of German influence and created stability by filling the power vacuum of the region. When under Germanic (Austrian) occupation between 1688 and 1867, she twice rose against the Germans and eventually gained her independence from them.

