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From Reminiscences, 1819-1899, by Julia Ward Howe (1899)
It would be impossible for me to say how many times I have been called upon to rehearse the circumstances under which I wrote the "Battle Hymn of the Republic." ….
[I was thinking] of the women of my acquaintance whose sons or husbands were fighting our great battle; the women themselves serving in the hospitals, or busying themselves with the work of the Sanitary Commission. My husband … was beyond the age of military service, my eldest son but a stripling; my youngest was a child of not more than two years. I could not leave my nursery to follow the march of our armies, neither had I the practical deftness which the preparing and packing of sanitary stores demanded. Something seemed to say to me, "You would be glad to serve, but you cannot help any one; you have nothing to give, and there is nothing for you to do." Yet, because of my sincere desire, a word was given me to say, which did strengthen the hearts of those who fought in the field and of those who languished in the prison.
We were invited, one day, to attend a review of troops at some distance from the town…. My dear minister [James Freeman Clarke] was in the carriage with me, as were several other friends. To beguile the rather tedious drive, we sang from time to time snatches of the army songs so popular at that time, concluding, I think, with
"John Brown's body lies a-moldering in the ground;
His soul is marching on."
… Mr. Clarke said, "Mrs. Howe, why do you not write some good words for that stirring tune?" I replied that I had often wished to do this, but had not as yet found in my mind any leading toward it.
I went to bed that night as usual, and slept, according to my wont, quite soundly. I awoke in the gray of the morning twilight; and as I lay waiting for the dawn, the long lines of the desired poem began to twine themselves in my mind. Having thought out all the stanzas, I said to myself, "I must get up and write these verses down, lest I fall asleep again and forget them." So, with a sudden effort, I sprang out of bed, and found in the dimness an old stump of a pen which I remembered to have used the day before. I scrawled the verses almost without looking at the paper. … Having completed my writing, I returned to bed and fell asleep, saying to myself, "I like this better than most things that I have written."
The poem … was soon after published in the "Atlantic Monthly" … I knew, and was content to know, that [it] soon found its way to the camps, as I heard from time to time of its being sung in chorus by the soldiers.