The top-lit, barrel-vaulted hall in which the gallery is accommodated was designed by architect Carlo Rossi and constructed from June to November 1826.
As a cadet of the Nicholas Cavalry College [ru], Vladimir Littauer was posted in 1912 to stand night-time guard in the Military Gallery.
He describes the experience as an eerie one, standing under the rows of portraits in the "huge hall" lit only by a single bulb over a cluster of banners.
The isolation of the solitary sentry was emphasized by the two to three minutes that footsteps could be heard down halls and corridors before the replacement guard arrived in the gallery.
[1] During the Soviet era, the gallery collection was enhanced by four portraits of Palace Grenadiers, the special ceremonial unit created in 1827 from veterans of the Patriotic War of 1812 to guard the entire building.