Military personnel in high-risk mission may experience acute stress reaction and temporary functional damage, which not only endangers the safety of the whole team, but also easily leads to the failure of combat mission. However, the mental health team engaged in combat stress control is far away from the combat mission scene, so it is challenging to provide immediate psychological first aid (PFA). To address this gap, the Israel Defense Forces developed a 5-step intervention (YaHaLOM), which allows ordinary soldiers to provide immediate PFA to the wounded at the scene of combat missions. YaHaLOM is based on the Six Cs (6Cs) model, which stimulate the cognitive communication and shifting the sense of helplessness and passivity to a sense of active and effective functioning among the wounded. YaHaLOM has the advantages of simple and straightforward operation and low training cost, and its effectiveness has also been preliminarily verified, which has a particular enlightening effect on combat stress control of our army.