Thanks to Alina for finding this great passage by William Lloyd Garrison from an 1889 issue of the Woman's Journal:
"History is responsible for this training of youth to the idea of the glory of war. From baby days it is stamped upon the impressionable childish mind that the God of Battles has ordained wars, and that this divine ordinance regulates the history of nations; that these are engaged in the fulfillment of immutable decree, a law of nature, like tornadoes and earthquakes, which from time to time will not be stemmed; that though atrocities and wickedness, sorrow and heart-breaking anguish, are bound up therewith, these cannot be avoided, and must be recognized as a portion of the inevitable....
It all belongs to what is considered a necessary system for the development of patriotism. That every child shall be made a fit and willing defender of his country, his enthusiasm for this first duty of the citizen is most carefully cultivated. His natural sympathy with humanity, his instinctive horror of inflicting suffering upon others, must be as carefully repressed. The inborn divine impulse of hatred for the barbarism and inhumanity of war becomes so warped by careless and superficial treatment of this part of the story that only the impression of the old national ideals, so useful for the aggrandizement of nations, can remain.
Everything which, according to the rubrics of war, must be expected, is no longer judged from the standpoint of humanity, but receives a quite special, mystical, historical, political sanctification. It must be -- it is the source of highest dignity and honor."
The majority of young people receive their "training" in submitting to the state and blindly supporting its wars at the government schools...so maybe ending public schooling is the key to ending the state's ability to con the people into supporting war.