Hallelujah Victory.
A victory gained by some newly-baptised Bretons, led by Germa’nus, Bishop of Auxerre (A.D. 429). The conquerors commenced the battle with loud shouts of “Hallelujah!”
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Entry taken from Dictionary of Phrase and Fable, edited by the Rev. E. Cobham Brewer, LL.D. and revised in 1895.