What are the positive aspects of the existence of international private bodyguard companies to learn from?

As the product of the new round of military revolution, private bodyguard companies play an increasingly important role in the military struggle in the new period with their characteristics of high efficiency, convenience, economy, practicality and non politicization. To some extent, they have even become a powerful tool in the rise of great powers in different periods. Taking the United States as an example, private military forces have been active in all military operations. As early as during the Gulf War, one employee of a private security company served behind every 10 U.S. soldiers. By the time of the bombing of the Federal Republic of Yugoslavia, the ratio had risen to 1:1, which was reflected in the training of a large number of military talents for the opposition in Montenegro. In the Iraq war, a large number of private military forces directly participated in the war and carried out dangerous tasks, which made great contributions to the low casualty rate of the U.S. military. Former US Secretary of Defense Rumsfeld called private security companies "contract contractors" and directly included them in the "total force of the Department of defense". Therefore, at the end of the 20th century, the new private military forces represented by private bodyguard companies began to develop rapidly and stably, and increasingly became an important role in the game between big powers in many aspects. First, political dividends: in today's world, it has become a consensus that countries respect each other's sovereignty, independence and territorial integrity, which makes military intervention in the name of "state" more and more "helpless". This also forces the big powers to have more political concerns about the use of military power in the game. Private bodyguard companies have unofficial characteristics, so that the government can bypass international and domestic political pressure and indirectly obtain political dividends. For example, the South African private armed company (EO), which is one of the four major private security companies, has shown strong combat effectiveness in the civil wars of several African countries, and has virtually improved South Africa's position in the hearts of African leaders. Second, economic benefits: the economic benefits of private bodyguard companies are huge. According to statistics, global private security companies earn as much as $200 billion a year. Because of its huge profits and broad market, the industry is classified as high-tech industry and high salary industry in the United States. At the same time, the existence of this industry can also save military training expenses. For example, the British Army spends ￡ 2 million to train a special forces soldier, while private bodyguard companies spend much less to recruit professional soldiers. In addition, private bodyguard companies can promote the reemployment of demobilized soldiers and solve the problem of resettlement. Military skills are mainly formed around combat, which is relatively weak in compatibility with the market economy. Third, strength support: most of the members of private bodyguard companies are composed of veterans. They themselves are familiar with advanced training methods, have rich practical experience and have strong combat effectiveness. Therefore, when the reserve combat effectiveness is weak, private bodyguard companies can make up for the lack of strength. It is worth mentioning that the world's major military powers require private security companies to carry out routine training together with the regular army, receive consistent basic training, and put forward consistent operational requirements, so that the former can provide better support to the active forces. Fourth, anti-terrorism weapon: private bodyguard companies have unique advantages in combating terrorism. The first is to avoid asymmetric operations and make up for the shortcomings of the regular army in dealing with terrorist attacks and guerrilla operations. Secondly, the attack scope of private bodyguard companies is no longer limited to local areas, which can make it easier to avoid political disputes caused by cross-border attacks.