The FBI Announces Gangs Have Infiltrated Every Branch Of The Military The FBI has released a new gang assessment announcing that there are 1.4 million gang members in the US, a 40 percent increase since 2009, and that many of these members are getting inside the military (via Stars and Stripes). The report says the military has seen members from 53 gangs and 100 regions in the US enlist in every branch of the armed forces. Members of every major street gang, some prison gangs, and outlaw motorcycle gangs (OMGs) have been reported on both US and international military installation