Last fall,  I was reading something on the web that equated the capacity of a fortification to square footage --- like 3 square yards per man and 120 square yards per artillery piece ---  think it was an early 1800's british army manual but now I have totally forgotten the source.   I also think it made a reference the interval between soldiers needed to securely man a fortification wall.   Any hints?   Is there a better forum location to post this question?
				
			
				