Activate all cheats
Bring up the map, click on it, then type: allcheats


Change weapon cost
Edit the INI.big file in your game directory using a hex editor. 
Do not change the length of the file or the game will not work. 
Just overwrite the text as required. 

For Example:

Search for "BuildCost" and overwrite it:
"BuildCost = 0000"


Ghost town
Make your base invisible by doing the following. 
Bring down console, then type in ghost town.


Hints:

Honors:
Note: This procedure involves editing a game file, create a backup copy
of the file before proceeding. Use a text editor to edit the 
"skirmishstats.ini" file in the "command and conquer generals data" 
folder. It can be found in "c:\my documents\" or "c:\documents and 
settings\administrator\" in Windows XP. Change the Honors line to 
"Honors = 999999999999999". If you do not have the Honors line, 
enter that line under the Challenge line.

100% complete:
Note: This procedure involves editing a game file; create a backup 
copy of the file before proceeding. Use a text editor to edit the 
"skirmishstats.ini" file in the "command and conquer generals data" 
folder. It can be found in "c:\my documents\" or "c:\documents and 
settings\administrator\" in Windows XP. Replace the current contents 
of the file with the following. 
Note: The "winstreak", "best win streak", "wins" can be changed as desired.

BestWinStreak = 100
Challenge = 0
Honors = 1000000
LastHouse = America
Losses = 0
LoyalGames = 31
Nuke = 1
PPC = 1
SCUD = 1


WinStreak = 100
Wins = 100
maps\alpine assault\alpine assault.map_2 = 1
maps\armored fury\armored fury.map_2 = 2
maps\dark mountain\dark mountain.map_2 = 1
maps\desert fury\desert fury.map_2 = 1
maps\fallen empire\fallen empire.map_2 = 1
maps\final crusade\final crusade.map_2 = 1
maps\fortress avalanche\fortress avalanche.map_2 = 3
maps\golden oasis\golden oasis.map_2 = 1
maps\heartland shield\heartland shield.map_2 = 1
maps\homeland alliance\homeland alliance.map_2 = 3
maps\lone eagle\lone eagle.map_2 = 1
maps\rogue agent\rogue agent.map_2 = 1
maps\sand serpent\sand serpent.map_2 = 1
maps\scorched earth\scorched earth.map_2 = 1
maps\silent river\silent river.map_2 = 1
maps\tournament desert\tournament desert.map_2 = 1
maps\tournament island\tournament island.map_2 = 1
maps\tournament lake\tournament lake.map_2 = 1
maps\tournament tundra\tournament tundra.map_2 = 1
maps\twilight flame\twilight flame.map_2 = 3
maps\wasteland warlords\wasteland warlords.map_2 = 1
maps\whiteout\whiteout.map_2 = 3
maps\winter wolf\winter wolf.map_2 = 1 


Easily selecting units:
When you have many units of soldiers or vehicles, first select all the units.
Then, press [Ctrl] and a number (0 to 9) to find the selected unit.


Americans: Prevent enemy from passing: 
When playing as the Americans, put six Rocket Soldiers and four Snipers 
inside a building. They will stop any enemy movement nearby, even the 
helicopter combat drop. The Rockets Soldiers will tear any vehicle and 
airship, while snipers take out Soldiers. You can use this to defend your 
base or specific places.


Americans: Helicopter pilots always eject:
If you are playing as the Americans and a ranked (veteran, elite, or heroic)
helicopter gets shot down, you can force the pilot to eject. Quickly use the 
green drag-box to attempt to select the helicopter as it is falling out of 
the sky. You will not actually select the crashing aircraft, but the pilot 
should eject every time. 


Allied artillery:
Use the Strategy Center's Bombardment. It will be same as the Artillery. 
Note: If you shoot very close to the Strategy Center, it cannot fire.


Build order
Here is a suggested order in which you can build your base so that you
get lots of money as quickly as possible. Note that this is only one method,
and that there are plenty of other build orders that are just as good. 


Deploy the Moveable Construction Vehicle, then build power, barracks, refinery,
power, weapons factory, then harvester (1 or 2). You should now be earning a
steady income which you can build upon.


Generate lots of cash
To have a steady flow of cash, build/train lots of Supply Dropzones, 
Hackers or Black Markets.


Multiplayer allies
When you are playing a multiplayer game, if there are two allies, make 
one of them GLA. Now build a tunnel network beside your friend and give 
him troopers and vehicles.


Play as Russia
Bring up the command console then type the following to get units with 
names from some of the old Command and Conquer game titles: Russia:Yuri_Relived