"Building an Army" The structure of a 19th century army

To the non-military buff, the organization and terminology used for Civil War armies can be very confusing. The Union and the Confederate Armies had different names depending upon their location. But despite the many names both of the armies were organized in a similar fashion including a structure of corps, divisions, and brigades. But what were these different organizations and how did they all fit in to one huge force?

Organization Affiliation
Fort Sumter National Monument
Time
30 minutes
Grade Level
Lesson Plan Subjects