Web Author's Notes:
This drawing appeared in Harper's Weekly on January 31, 1863. The caption in that periodical says, The Battle at Vicksburg - The Gallant Charge of the Sixth Missouri Regiment. See the associated article appearing in Harper's Weekly. Based on the Harper's Weekly article, we can see, below, the sand bar over the bayou that the 6th Missouri was trying to improve to allow troops to cross and attack the Rebel strongholds in force.