Its the 1 year anniversary of Halo 5 Guardians, look back on the past year and tell everyone what your favorite moment of the game. I really hope that there is some special event planned for today.
Happy birthday! Top moment was finally finishing that awful campaign lol
Meeting a group of people which I can now call close friends. 
Quite a few of my friends recently started playing Halo 5 again so that is probably my favorite moment, MP with friends has always been what Halo is all about for me.