A device for securing one end of fencing material, having a post extending into the ground with its bottom portion having outwardly extending flanges. A wire stretching device including a yoke with a turning rod passing therethrough to which is attached the wiring material comprising the fence, with the turning rod rotated to tighten the fence and a locking device for preventing the rod from counter-rotating. A tensioning device connecting the wire stretching device to the post which has a first and second sleeve with the second sleeve generally disposed within the first sleeve. A resiliant element connected to the second sleeve and adjustably connected to the first sleeve permits the second sleeve to move within the first sleeve. Selectively adjusting the resiliant element the tensioning device maintains the fence at a proper tautness. The device is adaptable to be an electrified fence and to utilize automated equipment in the setting of the posts in the ground.