The long watch

	A series of guard posts across the southern border. Covering 
about 150 miles, the posts are one mile apart, and each have two men in 
a small camouflaged guard shack. Equipped with spyglasses and sounding 
horns, they can signal the approach of incoming Alliance armies almost 
a full 2 days before they arrive, given that they look out on about 100 
miles of scrub plains and desert before losing visibility.