Known sourcecanonical
"On Fame's eternal camping-ground Their silent tents are spread, And Glory guards with solemn round The bivouac of the dead."
Theodore O'Hara / The Bivouac of the Dead. (August, 1847.)
The Bivouac of the Dead. (August, 1847.)
Bartlett's Familiar Quotations, 9th ed. (Little, Brown, 1905), public domain