A few heavy siege-guns were brought up from the gunboats and worked by naval crews.
The terrain between the lines made it easy to dig trenches and construct covered runs up to and even under the enemy's works. They would cover the trenches with cane and heavy logs, which provided cover for the Union soldiers to move.
To provide cover while they advanced the trench, the Union soldiers made "sap rollers" - a large bundle of logs tied together into a roll. This could then be rolled forward as the trench was dug.
In addition to the trenches moving forward towards Vicksburg, fortifications were also built in the rear. This was because Confederate General Joe Johnston was expected from that direction with a large army, in an effort to stop the siege.
To provide cover while they advanced the trench, the Union soldiers made "sap rollers" - a large bundle of logs tied together into a roll. This could then be rolled forward as the trench was dug.
In addition to the trenches moving forward towards Vicksburg, fortifications were also built in the rear. This was because Confederate General Joe Johnston was expected from that direction with a large army, in an effort to stop the siege.
