Complex sentence: The program known as Mojave Viper has become the model of pre-OIF deployment training; and the majority of units in the Corps will undergo a month of Mojave Viper before deploying to Iraq or Afghanistan.
Split into simpler sentences: The program known as Mojave Viper has become the model of pre-Operation Iraqi Freedom deployment training. The majority of units in the Marine Corps will undergo a month at Mojave Viper before deploying to Iraq or Afghanistan.