During their journeys across the wilderness, the twelve tribes formed encampments at the different places where they halted (Ex. 16:13; Num. 2:3). The diagram here given shows the position of the different tribes and the form of the encampment during the wanderings, according to Num. 1:53; 2:2-31; 3:29, 35, 38; 10:13-28.
The area of the camp would be in all about 3 square miles. After the Hebrews entered Palestine, the camps then spoken of were exclusively warlike (Josh. 11:5, 7; Judg. 5:19, 21; 7:1; 1 Sam. 29:1; 30:9, etc.).
Easton's Bible Dictionary. M.G. Easton. 1897.