A well-rounded military strategy is vital for both defense and offense. Early game, focus on a few Soldiers or Marines to protect your cities from alien incursions. As you progress, research technologies that unlock more advanced units like Tanks, Artillery, and Aircraft. Crucially, your Affinity will unlock powerful unit upgrades. For example, Purity units gain increased combat strength and defensive bonuses, Harmony units can control alien lifeforms and gain Miasma immunity, and Supremacy units receive cybernetic enhancements and increased movement. Always upgrade your units as soon as new Affinity levels are reached. Utilize terrain to your advantage; units on hills gain a defensive bonus. Combine different unit types for synergistic effects, such as using ranged units to soften targets before engaging with melee units.
