you cant get the default map cage in halo reach but you could try to remake one for your self
Defiant Map Pack
i am VERY sorry to inform you of this, but you cant. in halo 3, halo reach, and halo 3: complete multiplayer experience you can.
First go to menu, then towards the bottom it says save map. Sometimes it does save automatically though.
cant download halo 3 map pack, error message : premium is blocked
Go to forge and make a map and then you go to the menu and slecte add map in halo Reach
YES! Halo reach has a "Forge" feature, which allows players to create maps, the reccomended map is forge world.
You can download Anniversary Maps to Halo: Reach but not to Anniversary.
maybe
on halo reach you go to main menu and select forge and then select your map there start building your own map and i recommend forge world
The Halo Reach Beta will include four maps. You can read about them here.
Forge is not in Halo 2 and comes out in Halo 3 and Reach