All Warrior-Type monsters you control gain 200 ATK for each Warrior or Spellcaster-Type monster you control.
Rulings
Individual Card FAQs
Multiple copies of "The A. Forces" are cumulative. For example, if you control 3 Warrior-Type monsters and have 2 copies of "The A. Forces" active, each Warrior-Type monster has its ATK increased by 1200 points.
Netrep Rulings
"The A. Forces” continuously checks the number of appropriate monsters and alters ATK value accordingly
Spell|
Continuous