An author takes a risk writing a book about war at a time in history when war in general, and “religious wars” in particular, are detested, and when some Christian denominations are removing the “militant” songs from the church hymnal. But I’ll take that risk, because I think the church needs the message of the Book of Joshua more than ever before. We’re living in a day of reproach and defeat, and the church is no longer “clear as the sun, and terrible as an army with banners” (Song 6:10).