U.S. Military Using Marketing Firm to Identify Teenage Recruits The U.S. military is working with a private marketing firm to identify future recruits. The Defense Department will use a database of students between the ages of 16 and 18. The Washington Post says that as it struggles to meet recruiting goals, the military is collecting data on student grades, and areas of study, and ethnicity. It's an effort to find the most likely future troops. Some parents were already unhappy to learn that Federal law requires schools to give student addresses and phone numbers to military recruiters.