The Black Camp was the part of the Obedin City Army that was designated for addressing the problems of new privates in the army.
Like the other privates that were just addressed by the Sergeant, Rex went to the Black Camp where he was assigned to a military team.
The military teams in the army were made up of at least 5 soldiers.
Rex was assigned to a team called the Death Card team, the team already had a powerful team leader in the form of Justin, a private who came to the army a year before Rex's arrival.
The Death Card team was among the top 10 best private rank teams in the army, and Rex was assigned to it only because of his performance in the evaluation test by Sergeant Stones.
Turan was also assigned to a similarly powerful team due to his performance, while the others were spread randomly among the other private teams.
Once he was designated to a team, Rex received his army identity card before he followed the directions to his team's camp.