Cheats for Army Men: Sarge's Heroes (PS1)

Level select
At the main menu, hold Square + L1 + R1 and press Up, Down, Left, Right. If you entered the code correctly, you will hear a sound.

All weapons with infinite ammunition
Pause the game and press Square, Circle, R1, L1. If you entered the code correctly, you will hear a sound. -From: mbrodeurrules@hotmail.com