A great value! Two military manuals combine into one book. If you purchase both books separate you will pay more for the books plus shipping cost. Battlefield Operating Systems (BOS) as a framework: * Intelligence. * Maneuver. * Mobility and survivability. * Fire support (FS). * Air defense (AD). * Combat service support (CSS). * Command and control (C2). Each BOS is not discussed in detail. Instead, they are used to outline considerations for how the engineer platoon supports the total combined-arms (CA) effort. The bulk of the platoon's missions concentrates on mobility, countermobility, and survivability operations in support of the mobility and survivability BOS. However, the platoon leader and sergeant must have an understanding of the role their platoon plays in supporting all the BOS. More importantly, the platoon leader and sergeant must understand the impact of all the BOS on platoon planning, preparation, and execution. Manual for operating in today's operational environment within the framework of the Army transformation and, although focused at the operational level, is applicable for all levels of war. Engineers are a combat arm (a branch comprised of combat, combat support [CS] and combat service support [CSS] components) that enables joint and maneuver commanders to achieve their objectives through strategic movement and tactical maneuver by providing unique combat, geospatial, and general engineering capabilities.