The new housing units can hold up to 1,200 more people, and the rail improvements will allow trains to ship equipment and supplies directly to the military base near Edinburgh, the Daily Journal reports (http://bit.ly/1vkG1Mo). [...] the post has worked to brand itself as a location for specialized large-scale training exercises such as the Vibrant Response emergency preparedness, a host site for required annual training for Indiana National Guard members and a place for special events such as unmanned aircraft testing. To get on the list of national retraining sites, bases are supposed to have housing for about 8,000 soldiers and a rail system large enough to quickly load and unload equipment, such as vehicles and those needed for training. Camp Atterbury could hold about 4,300 soldiers at one time before, but those barracks were spread out in multiple locations at the camp and separated from bathrooms, showers and dining halls. The base was reactivated solely for the purpose of readying soldiers for overseas missions after the Sept.