Hey I just got halo 3 again and I don’t have recon I have played before which was like 2 years ago im just wondering if there’s someway I can get it, thanks.
Recon was unlocked for everyone. You should check to see if your Spartan has it in-game. Depending on how long you’ve played Halo 3 since picking it back up, it may take a little bit for the system to recognize you and give it to you.
I’ve been playing for about 5 or more days now and I started about a year after odst came out. I just checked again and I don’t have it
i dont have it neither 
Be patient and you’ll be rewarded. 
Mine isn’t there either… >_<