The foundation of a durable wire mesh fence lies in its fence posts. Begin by digging holes for the fence posts using a post hole digger, ensuring a depth of at least one-third of the post's length. Space the holes at regular intervals along the fence line, typically 6 to 8 feet apart. Insert the fence posts into the holes, ensuring they are plumb and level. Secure the posts in place by filling the holes with concrete and allowing it to set.