Different Squadrons:

Delta, an elite squadron of Soldiers, are some of the most well-trained soldiers in the world. Protecting the universe along with their other squad counterparts, Alpha, the squadron of guardians, and Echo, the squadron of Assassins. Delta, Alpha, and Echo are part of an organization called the "Squads". Delta is part of the 5 Original Squads (Alpha, Bravo, Delta, Echo, and Omega). Follow Delta Squadron on their Operation against the now rogue Squadron, Omega.

P.S: My friend Bio987123 (EB), has made his story on The Other Squadrons Vs Omega Squadron.