The main idea here is that a PLA theater’s fighting power is built from a broad mix of primary combat units drawn from all services, organized to operate under a theater command. In the recent革革, ground forces are structured around modular combined arms brigades with integral support like armor and artillery, so those brigades form the core ground combat power within a theater. At the same time, naval power is provided by fleet formations (and the Marine Corps for expeditionary tasks), air power by air force units, and long-range strike capacity by Rocket Force units. The theater also relies on the Strategic Support Force for space, cyber, and information warfare, tying all elements together. This combination of ground brigades, armored and artillery units, air defense, navy fleets, Marine corps, air force units, Rocket Force, and Strategic Support Force elements represents the primary force structure the theater can bring to combat. Infantry divisions, space shuttle fleets, and civilian contractors aren’t representative of the theater’s core fighting units, so they don’t fit as the primary force structure.

Deterrence-through-density centers on creating a dense, layered air-defense network that makes entering the airspace costly and risky for the attacker. The core idea is to deny air power by saturating the environment with sensors, surface-to-air missiles, and integrated command-and-control, so the adversary is deterred from acting. For air operations, this means the defender should avoid exposing its own air assets in the contested space and instead rely on the defensive network to deter and interdict, using early warning and missiles rather than large-scale offensive sorties. The emphasis is on protecting airspace and signaling deterrence, not on deploying a high volume of own aircraft into the area. The other options don’t fit: pushing more US air activity would undermine the deterrent effect; dismantling air defenses would remove the mechanism that deters entry; relying only on diplomacy ignores the military capability needed to deter air power in the first place.

Three Warfares are a set of tools aimed at shaping an adversary’s will and decision-making without relying primarily on direct battlefield force. They comprise psychological warfare, media or information warfare, and legal warfare. The idea is to influence what the opponent thinks, how they perceive risks and costs, and how they interpret the legitimacy of actions—so that Beijing can steer choices and reduce resistance before or during conflict. This approach helps the PLA create a favorable strategic environment in peacetime and in grey-zone situations, making it harder for opponents to justify or sustain counteractions. The other groupings refer to different domains or power dimensions, while the Three Warfares specifically target perception, communication, and legal justification to shape outcomes.

In PLA doctrine, a forced ambush is built around trapping the enemy by steering their movement into a prepared kill zone and unleashing coordinated effects from concealment. Obstacles and feints are used to canalize the bounding element, forcing the attacker to move along restricted routes and quartered paths where a surprise can be achieved. The idea is not to chase the enemy but to guide them into a pre-set ground where the ambush can maximize its impact. Pre-registered artillery on suspected forward positions ensures the ambush has immediate, accurate fires as soon as the enemy enters the kill zone, turning expected entry into a lethal bottleneck. A sneak raid to disrupt complements this by striking at crucial links, formations, or command and control elements to degrade the attacker’s cohesion and tempo before they can react. The cover group that denies information about the formation helps preserve surprise by misleading the enemy about what is happening, where the main force is, or how the ambush is laid out. Taken together, these elements create a designed trap that channels the enemy into a controlled engagement with overwhelming local firepower and disrupted organization. Other choices describe operations that are not ambushes—large-scale airborne assaults, naval blockades, or full-frontal frontal assaults lack the element of a concealed, surprise setup designed to trap and break the enemy in a prepared kill zone.