A bit ago I read a Landmark book called Swamp Fox of the Revolution. It is about General Francis Marion and his brigade of men who camped in a nearly inaccessible swampy area in South Carolina. From this hideout they would spring to make their assaults. Here is what I wrote after reading it:
"Tremendously encouraging in this way: His assaults were not always totally successrful, but they always were to some effect. They may not have taken a fort but they intimidated the English by the attempt, or caused the English to relocate troops to America's advantage. So in the Christian battle. We may not be totally successful in our attempts but we should not believe the devil who would convince us that our efforts had no effect."