Advance Wars Hints

1. Save a campaign or war room level and turn off game.
2. Go to field training and select naval battles. Make sure to lose in naval battles by letting your t copter get destroyed.
3. Then go to design maps mode. Make an HQ and an infantry then destroy the infantry. your screen will be glitched.
4. Press A on a piece of land click down 3 times where you are and press on options.
5. Then click down 2 times to exit map. Say yes.
6. You will be at the main menu screen. Then go to war room or campaign. Click L and you should be able to put anything in you want in the map. Once your done save. Then turn off you gameboy. When you turn it back on the glitch will be gone but whatever you put on the battlefield will still be there. You can easily beat the game!

Hint: Special Intel
After you have finished the Field Training missions (and in the course opened up the War Room, Campaign, Design Maps and Stats features), go back into Field Training. A very short tutorial called Special Intel is now available that gives you extra gameplay tips.

Hint: Clear Data
To erase all saved game data the easy way, turn on your Game Boy Advance and press and hold right, L and Select at the same time. Be careful that you don't accidentally delete your data, though.
Hint: Soft Reset
Press START + SELECT + B + A
Hint: Ghost Mode
Hold B during turn.