Enlisted men had a LOT of downtime; as such, they often filled the time with improvised board or card games.
Given that much of the infrastructure of the battle areas hadn't yet been built (or had been damaged intentionally by one of the two sides), regiments had to often build their own transport vessels, as seen here as the artillery unit transports two heavy canons away from the fort.
See Next Page
20 Stunning Photos from the Civil War