vain

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in vain 1 : without success <I searched in vain for my key.> 2 : in an unholy way
History May Be Searched in Vain: A Military History of the Mormon Battalion is an in-depth historical study of the only religious unit in American military history--the Mormon battalion, which was recruited entirely from one religious body and had a religious title as the unit designation.
In Branch's expert hands, the next three years of American history are the diffusion of that certainty and the political momentum it would bring--and that progressives have spent the last 40 years trying in vain to recapture.