Kalran: Tales of the four nations/Infantry

Often the first into battle, and based off their role in company of heroes. Infantry forms the backbone of any faction. Coming in squad size

Morale
Infantry have a secondary health, called morale, which takes damage when they suffers heavy damage in short amount of time, heavy suppression, heavy artillery, or terror weapon like toxins and fire. And will suffer heavy debuffs to their damage, range, and suppression resistance but increase speed and defense once it's depleted. And if infantry morale stays deplete for too long, or suffer heavy morale damage like a bombardment, most will retreat off the map, the equivalent of the squad dying.

Suppression and pinned
When medium infantry are hit by a heavy machine gun, rapid artillery bombardment, or a sniper, they will go into a suppressed state. Lowering their speed but briefly increases their defense, especially if in cover. Followed by taking low but constant morale damage, and heavily reduced rate of fire and damage.

And if a light infantry gets suppressed or a medium infantry stays suppressed for a too long they will become pinned, fully immobilizing said infantry and briefly grant a large buff to defense but will take more damage afterwards and can't attack.

Heavy and superheavy infantry are immune to suppression effect. But heavy infantry will take more damage and are slowed down, with superheavy speed slowed to the point of being pinned, while heavy artillery strikes will stun them.

Trivia

 * Infantry squads are rather unique in that they are the only forces, barring infantry in one squad, to have multiple voice actors in a unit, representing each squad member, to some extant