Andrew Cusack at Taki's [paleo-conservative] Magazine quotes a fascinating old article from The History News Network concerning the attitude of American conservatives toward the bombing of Hiroshima in the aftermath of World War II:
"...[two days after the bombing of Hiroshima] former Republican President Herbert Hoover wrote to a friend that "[t]he use of the atomic bomb, with its indiscriminate killing of women and children, revolts my soul."
"Days later...the conservative owner and editor of U.S. News...argued that Japan's surrender had been inevitable without the atomic bomb. He added that justifications of 'military necessity' will 'never erase from our minds the simple truth that we, of all civilized nations...did not hesitate to employ the most destructive weapon of all times indiscriminately against men, women and children.'
"Just weeks after Japan's surrender, an article published in the conservative magazine Human Events contended that America's atomic destruction of Hiroshima might be morally 'more shameful' and 'more degrading' than Japan's 'indefensible and infamous act of aggression' at Pearl Harbor.
"...A 1947 editorial in the Chicago Tribune, at the time a leading conservative voice, claimed that President Truman and his advisers were guilty of 'crimes against humanity' for 'the utterly unnecessary killing of uncounted Japanese...'
"A steady drumbeat of conservative criticism continued throughout the 1950's. A 1958 editorial in William F. Buckley, Jr.'s National Review took former President Truman to task for his then-current explanation of why he had decided to drop an atomic bomb on the city of Hiroshima...
"...a 1959 National Review article matter-of-factly stated: 'The indefensibility of the atomic bombing of Hiroshima is becoming a part of the national conservative creed.'"
(I am cutting all kinds of equally interesting stuff - there's much more at the links.)
So c. 1960, it was the conservatives who condemned the Hiroshima bombing, and the liberals who defended it?
My. How times change.
Well, I suppose it was inevitable. Old-timey conservatives of that sort were beaten all hollow at the polls, while the legend of "the good war" took hold. In due course, they either converted to the liberal triumphalist view of the war, or found themselves driven into little hidey-holes like Taki's and The American Conservative.