The AI in Call of Duty 2, both friendly and enemy, follows predictable patterns that you can exploit. Enemy AI:

- Flanking: Enemies will attempt to flank your position if you stay in one spot for too long.
- Grenade Usage: Enemies frequently throw grenades to flush you from cover. Listen for the distinct 'clink' sound.
- Suppression: Enemies will duck and seek cover under heavy fire, creating opportunities for you to advance.
- Reinforcements: Expect waves of reinforcements in key areas or after completing objectives.
- Covering Fire: Your squadmates will often lay down suppressing fire, drawing enemy attention. Use this to your advantage.
- Limited Effectiveness: While helpful, friendly AI is not invincible and won't always clear areas for you. You are the primary force.
- Pathfinding: Friendly AI generally follows a set path. Don't rely on them to find creative solutions.
By understanding these behaviors, you can predict enemy movements and better coordinate with your squad.