1. Language Requirement: Applicants must be proficient in American English, which is helpful for serving in the U.S. Foreign Legion. Knowledge of French is more advantageous for those targeting the French Foreign Legion, as this corps has a European tradition and may hold certain prejudices against U.S. recruits.2. Health Conditions: Applicants must not have hereditary diseases, physical disabilities, or hidden illnesses. This requirement is very strict for private security companies, but myopia is not usually a disqualifier. Applicants should provide accurate information and should not conceal any health issues, as concealment is typically unsuccessful.3. Physical Appearance: Applicants must meet certain height and weight standards and should not be underweight or overweight. For instance, an applicant with a height of 180 cm and weight of 50 kg or a height of 170 cm and weight of 86 kg may not be accepted.4. Military Experience: Applicants with prior service in a national military, particularly in Special Operations, intelligence, or Special Forces, are often more welcome. However, those without prior service can also be accepted if they meet physical conditions, as private security firms provide special training and those who do not meet standards are weeded out.5. Personal Habits: Applicants should have no bad habits. However, in reality, many private security personnel may develop various bad habits shortly after joining the unit. The punishment for using prohibited substances during missions is severe, and thus, such habits should be avoided.6. Enlistment and Joining Process: The French Foreign Legion holds annual recruitment drives, and applicants can choose to travel on a tourist passport or attempt to enter clandestinely. Blackwater, based in the United States, recruits directly within the country and checks for any criminal record of applicants while they have been in the U.S. Joining Blackwater is not recommended, as its mortality rate is relatively high among officially registered security consultant companies in Western countries. In conclusion, applicants should seek to serve with honor and dignity.