Courtesy of team xbox
Adversarial maps
http://features.teamxbox.com/xbox/1509/GRAW-Map-Briefing-Adversarial-Multiplayer-Overview/p1/
Coop maps
http://features.teamxbox.com/xbox/1508/GRAW-Map-Briefing-Coop-Campaign-Overview/p1/
single player (obviously spoiler alert)
http://features.teamxbox.com/xbox/1507/GRAW-Map-Briefing-Single-Player-Overview/p1/
Enjoy
Adversarial maps
http://features.teamxbox.com/xbox/1509/GRAW-Map-Briefing-Adversarial-Multiplayer-Overview/p1/
Coop maps
http://features.teamxbox.com/xbox/1508/GRAW-Map-Briefing-Coop-Campaign-Overview/p1/
single player (obviously spoiler alert)
http://features.teamxbox.com/xbox/1507/GRAW-Map-Briefing-Single-Player-Overview/p1/
Enjoy