I translated the Japanese Final Fantasy 16 "Awakening" trailer as there's a bit more lore revealed:
-The marking on the soldier's faces prevents them from defying orders
-Crystals protect the people
-There was a large war before this one

Here's Part 1 of the subbed #FF16 trailer pic.twitter.com/wEOntpOzG9

— ☆オードリーAudrey☆ (@aitaikimochi) September 19, 2020