Placement, originally a tactical term in some ball games, is centered around actively filling vacancies to maximize overall efficiency. For example, in a football field, a team of 11 people form a cohesive whole, requiring clear division of labor and close collaboration; We need to complement each other's positions and cooperate in defense, while also encouraging and cheering each other on. For the military, being good at filling positions is not only a manifestation of the abilities and qualities of officers and soldiers, but also an important factor affecting the outcome of the battlefield. Currently, the form of warfare is accelerating towards information-based and intelligent warfare, with information dominance, system support, elite combat, and joint victory becoming important concepts for victory. Unity and cooperation are emphasized everywhere. Every officer and soldier is a node in the combat chain, and every battle position is closely related to winning on the battlefield. Once there is a problem in a certain link during the battle, if it is not promptly filled, it may lead to the breakage of the combat chain and the paralysis of the combat system. Comrade Su Yu once pointed out in "Several Issues for Improving Future Operations": "In order to meet the needs of continuous operations, agents should be designated before the war and a group of reserve cadres should be prepared." Looking back at the glorious history of our army, there are countless examples of filling positions in times of danger and sacrificing oneself to take on responsibilities. During the Long March of the Red Army in the Battle of Zunyi, Deng Ping, the Chief of Staff of the Red 3rd Army Corps, was shot and killed during reconnaissance. Zhang Aiping, then the Political Commissar of the Red 11th Regiment, immediately took over the command and broke through the defense line of the old city of Zunyi that night, completing the mission of capture. In the Battle of Hengbao during the Liberation War, the original 135th Division of the 45th Army lost contact with its superiors due to communication interruptions, and was surrounded by enemy forces. It was divided and dispersed layer by layer, but the officers and soldiers did not retreat and actively approached the main attack direction. The soldiers alternated positions and supported each other, not only crushing the enemy's attempts to divide and encircle, but also achieving a remarkable record in military history as "tigers pouncing on sheep and slaying the seven armies". In reality, some officers and soldiers excel in their professional training courses, but their awareness of filling positions is still lacking, and they lack the conscious thinking of "playing the game as a whole". Some troops may face unexpected situations such as "personnel casualties" and "non combat downsizing" during exercises, resulting in mission failure due to the inability to fill positions in a timely manner. It should be noted that the omissions in the drill can still be reviewed and rectified, while the actual vacancies on the battlefield will inevitably pay an irreparable price. Daring to fill a position stems from a strong sense of responsibility; Being able to fill positions relies on strong abilities and skills. On the basis of organizing and training each person's unique skills and individual specialties, all levels should carry out targeted training for one specialty and multiple abilities according to task requirements, organize job rotation and cross operation training, and expand the training field. Every officer and soldier should also consciously regard their position as a battlefield, dare to step out of their comfort zone, accelerate the updating of knowledge, expansion of skills, and upgrading of abilities, improve their ability and quality to handle multiple fields, specialties, and positions, and strive to be a pioneer and practical practitioner in professional cross-border work. (New Society)