Pretty sure it's 120, but it can go higher depending on the map.Louis Wu said:Actually, 2X has 125.
Edit: That's not including vehicles.
24 Grunts
24 Jackals
24 Brutes
24 Skirmishers
24 Elites
The base of a Firefight Wave does not exceed six squads of four units each; it can be less because certain enemies count as a squad unto themselves (Hunters, Elite Generals, Brute Chieftains). Often there are more than 120 because of the hazards - drop pods, snipers, Engineers and of course vehicles. Regular Score Attack has 102, because there are only six Elite Generals - each one acting as its own squad.
(The timing of this post amuses me because I'm writing a monster article analyzing Firefight for FUD and I just worked on the section describing the squad mechanics.)