5 Differences Between Army and Marine Corps Infantry

Who would win in a fight?
By G.I. Jobs Staff

3. Fire Support


Photo: Marine Corps photo by Cpl. Austin Livingston

Obviously, infantry units aren’t on their own on the battlefield. Marine and Army rifle units call for assistance from other assets when they get bogged down in a fight. Both the Marine Corps and the Army companies can get mortar, heavy machine gun and missile/rocket support from their battalion when it isn’t available in the company. For stronger assets such as artillery and close air support, the services differ.

Marines in a Marine Expeditionary Unit, an air-ground task force of about 2,200 Marines, will typically have artillery, air and naval assets within the MEU. Soldiers in a brigade combat team would typically have artillery support ready to go but would need to call outside the BCT for air or naval support. Air support would come from an Army combat aviation brigade or the Navy or Air Force. Receiving naval fire support is rare for the Army.




  1. Jo August 5, 2016 at 16:43 - Reply

    This was not accurate and bias by a ton. Should fact check with a Marine Corps Gunner before you make such claims.

  2. Ryan September 30, 2016 at 10:50 - Reply

    What’s more worth it Army or Marines

  3. Dave "2dogs" Portillo December 9, 2016 at 16:49 - Reply

    Wrong about the Air Support. The Marines don’t need to call Army, Navy, or Air Force. Marine Air is organic in the Marine Air/Ground Task Force. Starting with the MEU – will have it’s own Air assets. Typically off the ship nearby or amphibiously set ashore, Marine have their own organic AV-8 Harriers attack jets, AH-1Z Cobra attack helicopters, UH-1Y Utility Helicopters, CH-53 Heavy lift helicopters, & MV-22 Osprey Medium lift/Long Range Tiltrotor aircraft. Above a MEU, the Marines will have their own F-18 and F-35 Fighter Jets, too. I hope this clarifies things better. Semper Fidelis! “2dogs”

  4. Buster Jaw December 15, 2016 at 05:04 - Reply

    Either USA or USMC, infantrymen are an elite fraternity.

    Semper Fi

  5. Colin Jernigan March 22, 2018 at 12:32 - Reply

    There is confusion on the Ranger Regiment in this article. Ranger school is not affiliated with the Ranger Regiment. The only way to get into the ranger Regiment is to go to Ranger Selection. Ranger school will not get you in to the Regiment. In order to make E-5 in the regiment you will need to complete Ranger School though.

  6. Bernard Bates November 8, 2018 at 17:28 - Reply

    what I thought was interesting was the fact that the Army Squad has one man designated as marksman to take on long range targets. The Marine Squad doesn’t, That tells me that the entire Squad are Marksman and can take on long range targets. When I qualified at bootcamp with the M1 We fired from the 200, 300 and 500 yrds in the prone position. that’s one thing that Makes the Marines different At 500 yds the Bullseye looked liked a pinhead. Semper Fi.

  7. NAC April 12, 2019 at 20:04 - Reply

    Difference! Back in 2002-2006 when I was in the difference was easy to see! I remember being told the Army was taking Baghdad! They did there best but were hit with a road block! It was the Marines who took Baghdad and there leaders home! Fact I was there and I did it! 1/5 make peace or die!

    My third tour in a four year enlistment I had a NCO who was a Gunny who worked with the Army and helped train there Airborne and other special ops! He did this for 4 years and his words! A Infantry Marine found Airborne school easy!

    I worked with Rangers and Airborne they where great to work with and I’d go to hell with them!!! Yet other then jumping out of an airplane they were a basic trained Marine Grunt!

    No flame on the Army at all! If you want to kill and be a grunt then it’s mother green! Yet I have seen how my Marine corps has allowed dope smoking jack a$$es to just make a joke our of MY Marines!

    Also not a big fan of the Marines! From personal experience! How can you like a place that will charge you for taking care of you family? Or that will take the word of an officer over several enlisted men? Talking like 10 Enlisted men vs one officer with documents!

    • Mark January 3, 2020 at 00:05 - Reply

      Nice revisionist history! 3rd ID Army along with 1st Marine Expeditionary. took Baghdad. Just so you know 3rd ID beat Marine 1st Div because of better planning. You guys thought you could “Hey diddle diddle straight up the middle” through towns you thought would be lightly defended and got held up time and time again. I know it is a hard pill to swallow Marine but you guys got your rears handed to you getting to Baghdad. Army got their first and that is now HISTORY! Whether you were there or not simple history is you got there after the Army got there on 3rd of March, 2003.

  8. Andrew May 27, 2019 at 22:31 - Reply

    BOTH !

  9. David (M/SGT, US Army) May 27, 2019 at 22:47 - Reply

    An Army Infantry Battalion also includes a Combat Support Company (CSC) which includes additional heavy weapons,
    both man-portable, and vehicular mounted if mechanized ,such as on a tracked vehicle or APC. Example of an Army
    Infantry Battalion would be:

    7th Infantry Division, 1st Brigade, 2nd Battalion 17th Infantry (Regt), HHC, A, B, C Companies and Combat Support
    Company (CSC). An Army Infantry Battalion normally is composed of five (5) companies. Three or battalions make a
    brigade. In WW I, WW II and in Vietnam, some Marine Corps infantry units were cross-attached to the US Army Infantry

    An Army Division is comprised (in war time) of at least 4 brigades with numerous augmentation, attached, and cross-
    attached units, and a separate Artillery Brigade, a Medical, Signal, Intelligence, S&T, QM and MP battalions which may
    form the “Garrison” units of the Division. All of these units are fully deployable and all are tactical in nature.

  10. Jason Hernandez May 29, 2019 at 19:55 - Reply

    They should put this on the Army recruiters window. So people know the difference and can then make the best choice. On the marines corp recruiter window too.

  11. bob rekmanis June 14, 2019 at 23:13 - Reply

    At the end they all are Great Wariors

  12. Hoff November 21, 2019 at 18:20 - Reply

    Are we forgetting the Marines have Force Recon……

  13. Jim Van Zandt January 2, 2020 at 13:53 - Reply

    I though the significant difference was that the Marines are effective in smaller detachments. If you’re sending dozens of troops to defend an embassy, they will be Marines. The Army can be much more effective, but you’ll be sending thousands, or tens of thousands, with a logistics tail to match.

  14. Richard Gocio January 2, 2020 at 22:59 - Reply

    The article started out by stating it drew information from manuals; then went on to state a mishmash of misinformation that is not in those manuals and involves more branches, corps, and services than those manuals. Maybe they should have taken a lesson from Joe Friday, “Just the facts Mam.”
    Platoon size? Don’t know about the Marines, but I know that TO&E for an infantry unit can vary from team size, number of teams in a squad, number of squads in a platoon. It has a lot to do with being versatile and mission assignment. Don’t confuse Army infantry with Airborne, Rangers, or Green Berets. Any and every soldier who passes the Airborne selection and course, regardless of MOS is Airborne. They can even be assigned to an Airborne unit, but that doesn’t make them an Airborne Infantryman. The same goes for Ranger school and tab. The Medic who gets both tabs Airborne Ranger is a bad mofo, but he’s not Infantry. Once a soldier (of any MOS) gets the esteemed privilege of doning that green beret, they are no longer Infantry or whatever Corp they came from, they now are in the SF or special operators realm and any and all comparison to the Infantry ends.
    Equipment, don’t know where the writer got their info, Army units don’t all get new stuff first. Any soldier remember qualifying with weapons so worn you could see between the parts? I could go on about this article, but I’ll close with this, Misinformation is a great tool for OPSEC and counter intelligence 😉

  15. richard newcomb January 26, 2020 at 17:23 - Reply

    Ive read the comments above interesting. I was in the Army in the mid 80s.We all do the same job and get it done. I TRAINED U.S. ARMY and the MARIANS. Rock on AMERICA.

  16. richard newcomb January 26, 2020 at 17:25 - Reply

    Sorry for typo MARINES

Leave A Comment