Traditionally that would be infantry, but in recent years soldiers in EOD and transportation/supply could make a legitimate claim to it as well. All soldiers in the US Army after are ultimately infantry.
Special Operations or any Infantry MOS
It is MOS 1141.
Yes, if your MOS entails it, you will most likely go be with the troops, as you increase officer rank, your administrative tasks will increase.
This is something you have to decide for yourself. Both services offer combat arms occupations. Which one is better for you is something you're going to have to figure out on your own.
68Ws (Combat Medics)
infantry
Intelligence Specialist
Of course! pick an MOS that you enjoy and your good at and you can keep re enlisting in the Marines and youll stay at the same MOS and continue for the next four years.
MOS 0331 is machine gunner in infantry
MOS 7011 is an Expeditionary Airfield System Tech.
MOS 2142 is the designation for a Marine Corps Amphibious Assault Tracked Vehicle Repairer.
Ground Intelligence Officer.
a combat ninja that fight for evil