Activision released Call of Duty: WWII to retailers on November 3rd, these are the Confirmed Divisions and their progression in WWII...
Infantry:
I - Rifle Bayonet
II - Additional Primary Attachment
III - Extra Magazines
IV - Move significantly faster while aiming down sights (ADS)
Airborne:
I - SMG Suppressor
II - Sprint for longer distances
III - Climb over obstacles faster
IV - Increased sprint speed
Armored:
I - LMG Bipod
II - Immune to Shell Shock and Tactical Equipment
III - Take less fire damage
IV - Take significantly less explosive damage
Mountain:
I - Sniper Sharpshooter
II - Always invisible to enemy Recon Aircraft
III - Hidden to player controlled Streaks
IV - Silent movement
Expeditionary:
I - Shotgun Incendiary Shells
II - Select a piece of Tactical and Lethal equipment
III - Throw equipment faster, farther & while sprinting
IV - Resupply equipment from killed enemies
Infantry:
I - Rifle Bayonet
II - Additional Primary Attachment
III - Extra Magazines
IV - Move significantly faster while aiming down sights (ADS)
Airborne:
I - SMG Suppressor
II - Sprint for longer distances
III - Climb over obstacles faster
IV - Increased sprint speed
Armored:
I - LMG Bipod
II - Immune to Shell Shock and Tactical Equipment
III - Take less fire damage
IV - Take significantly less explosive damage
Mountain:
I - Sniper Sharpshooter
II - Always invisible to enemy Recon Aircraft
III - Hidden to player controlled Streaks
IV - Silent movement
Expeditionary:
I - Shotgun Incendiary Shells
II - Select a piece of Tactical and Lethal equipment
III - Throw equipment faster, farther & while sprinting
IV - Resupply equipment from killed enemies