In the 20th century this was taken to mean infantry, artillery, armor, and airpower. In 2210, Combined Arms is achieved when multiple commanders participate in the same battle, using techniques and MODs specialized to a particular mode of warfare. Working together, the commanders can create a combat power out of proportion to their numbers.

Requirements:

• 1 copy of RISK 2210AD.

Setup:

• The game is set up as normal.

Playing:

• Attack:
  Combined Arms is achieved when any 3 commanders are present in the territory which the attack comes from.
  Effect: Add 1 to the highest die roll (examples: 5-5-2 becomes 6-5-2; 8-4-1 becomes 9-4-1).
• Defence:
  Combined Arms is achieved while defending when any TWO commanders are present in the defending territory.
  Effect: Add 1 to the lowest die roll (examples: 6-1 becomes 6-2; 6-6 become 7-6).

Notes:

• It is possible both attacker and defender may benefit from Combined Arms combat.
• The type of territory of the attacker and defender is irrelevant.
• This benefit is in addition to any 8-sided die that might be used because of commanders or a space station by the attacker or defender.