It's easier to defend yourselves from higher ground -- you can fire weapons (rocks, boulders, bullets...) better from higher than from lower ground!
http://webbzterx.tripod.com/id44.html
http://query.nytimes.com/gst/abstract.html?res=9F02E6DA1738E633A2575AC1A9679D946596D6CF
http://classics.mit.edu/Tzu/artwar.html
Scroll down to section IX, number 6.
why did the colonists take the higher ground at concord?
2 answers
thanks!