Combat readiness refers to the preparations and alert activities of the armed forces for undertaking operational tasks and MOOTW, and it is the general, comprehensive and regular work of the armed forces. It is an important guarantee for coping with various security threats and accomplishing diversified military tasks to enhance the capabilities of combat readiness and maintain constant combat readiness. The PLA has a regular system of combat readiness. It improves infrastructure for combat readiness, carries out scenario-oriented drills, and earnestly organizes alert duties, border, coastal and air defense patrols and guard duties. It keeps itself prepared for undertaking operational tasks and MOOTW at all times. Based on different tasks, the troops assume different levels of readiness (Level III, Level II and Level I, from the lowest degree of alertness to the highest).

陆军部队的日常战备，以维护边境正常秩序和巩固国家建设成果为重点，依托作战指挥机构和指挥信息系统，加强战备值班要素整合，探索战区联合值班模式，推进团以上作战部队战备值班系统综合整治，以常态化运行的体制机制保证战备工作落实，形成各战略方向衔接、多兵种联合、作战保障配套的战备力量体系布局，始终保持迅即能动和有效应对的良好状态。海军部队的日常战备，以维护国家领土主权和海洋权益为重点，按照高效用兵、体系巡逻、全域监控的原则，组织和实施常态化战备巡逻，在相关海域保持军事存在。各舰队常年保持必要数量舰艇在辖区内巡逻，加强航空兵侦察巡逻，并根据需要组织机动兵力在相关海域巡逻警戒。空军部队的日常战备，以国土防空为重点，坚持平战一体、全域反应、全疆到达的原则，保持灵敏高效的战备状态。组织常态化空中警戒巡逻，及时查证异常不明空情。空军指挥警戒值班系统以空军指挥所为核心，部队指挥所为基础，以航空兵、地面防空兵等战斗值班兵力为支撑。

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