Travelers are divided into separate boarding groups on American Airlines. Moreover, they have 9 boarding groups as which are known as Group 1 to Group 9. Passengers are divided into American Airlines Boarding Groups according to their eligibility. Furthermore, Group 1 is for active U.S. military personals and AAdvantage Executive Platinum members. For more information about the group booking process and guidelines of American Airlines, flyers can contact the airline's customer support desk via phone or read the blog mentioned by Airlines Group Travel.