i found out a glitch when your men are going behind the fort when one dude is in the spears click him then u can go out and in and the enemy will not attack that person unless u go defend or attack then its like his invisable and his in god mode so ya but it doesnt work with giants have fun with my glitch i found :)
 "Stick War"){kind=icon}
 "Starcraft 2 pro TD"){kind=icon}
 "tower defence"){kind=icon}