This history traces the evolution of the armaments and fortifications that came under the command of Fort MacArthur, with a focus on those that dotted the coastal hillsides of the Palos Verdes Peninsula and San Pedro, California. It also provides precise locations of the remnants of these fortifications to help readers explore for themselves. The 5th edition contains a small amount of additional content beyond what was in the 4th edition. However, it printed on higher quality paper than its predecessors and all photographs and other graphics are in their ORIGINAL COLOR.