I don't think the Marine Corps will ever have to worry about being absorbed by a service. America wants a Marine Corps. We have a very positive image (with war contributions, President's military escort and Toys4Tots).
Also, the Marine Corps is used as a rapid deployment force in readiness, used primarily to conquer/secure areas, whereas the Army is more of an occupying force.
If you look at Iraq after the initial invasion, it was the Army that was being used primarily as a peace-keeping force. It wasn't until the DOD realized they had bitten off more than they could chew, that we were sent back in.
Also look at Haiti in the 90s, Somalia, etc.
And the statistics right now clearly show more U.S. Soldiers dying "over there".
And whoever the thread starter was, make a careful and thoughtful decision as to what job you're going to do.
Some good/easy jobs are Public Affairs, IT, admin (cake for the most part), counter intelligence, EOD, the mechanic/air crew jobs are good if you get and get hired by Rolls Royce, Boeing, etc.
Ask the recruiter about a signing bonus (they won't mention it).
If you have 12 credits of college, make sure he/she gives you a guaranteed Private First Class.
If you have second thoughts, you can back out everytime you swear (that's the key). You have to swear before you set off for bootcamp, and that's your last chance to back out.
The Marine Corps is like the tale of two cities. It's the best of times, and the worst of times. The comraderie, travel, training are all great. Running through the O-Course, shooting a pistol and rifle without any recriminations, punching a friend in a stomach during martial arts training, camping out, etc are some examples. It's the bullshit they subject you to like Chinese Field Days (where you have to remove all the furniture out of your room), securing your libbo or not being able to voice your opinion or being put on a crappy working party.
As you go up in rank, you're subjected to less b.s. (but it's still there).
If at all possible, go officer.
The best duty stations are MCAS Miramar, MCAS Iwakuni, Camp Pendleton (as long as you're not a grunt, as they go through the most b.s.), Mt. Fuji, the base in New Orleans and a few Naval and Air Force bases.
And every service has its benefits and purposes. Definitely do your research.
Make sure you're in good shape and can pass the Initial Strength Test. And homesickness is bound to happen.
If you have any other questions, feel free to ask.