Peterson, Evar P.; Bennett, William E.; Fletcher, Charles W.; Lewis, French G.; Shea, Gerald H.; Cleghorn, Rufus J.; Beaver, James F.; Diamantes, Thomas; Briggs, Richard F.
In locating the site for a defensive firing line, it must be divided into three sections : firing line, immediate support and reserves. In doing this several opposing factors should be taken into consideration and their relative importance judged...