the art of designing a camp
• (n.) The art or act of encamping; the making or laying out of a camp.
Cas`tra·me·ta'tion noun [ French castramétation , from Latin castra camp + metari to measure off, from meta limit.] (Mil.) The art or act of encamping; the making or laying out of a camp. 
Castrametation is the art of tracing out and disposing to advantage the several parts of a camp on the ground.