Star trek: Ground Combat Specialist?

[Lucky]

HAYES [Mess Hall]: The quicker you folks find these Xindi, the quicker we can get to work.


HOSHI: Military Assault Command.


HAYES: Captain Archer wanted the best.

ARCHER: The MACOs' tactics and technology are two, three years beyond Starfleet's. Why not let them pass on some of that expertise? You don't agree. 


REED: The MACOs' expertise comes from simulated combat, all conducted on Earth. On the other hand, we've fought numerous alien species on many different worlds. If anything, we should be giving the MACOs the benefit of our experience. 


ARCHER: Hayes and his men have gone up against a few aliens on this mission, including the Xindi. They've handled themselves pretty well. I'd like you to co-ordinate the training sessions with the Major. 


REED: Aye, sir.

https://www.youtube.com/watch?v=1-_lrf44Gw0

A side from the MACO in Enterprise, do we ever see Ground Combat Specialist?

The closest i can think of is a throwaway line by Kira

KIRA: With all the Dominion activity along the border, it's all Starfleet can spare at the moment. And the Defiant has another appointment. In fifty two hours you need to be at this rendezvous point outside the Badlands. You are the escort for a Federation troop convoy. 


WORF: It will take twelve hours just to arrive at the coordinates where the Honshu was destroyed. 


KIRA: And twelve more to reach the Badlands, I know. But this convoy is completely unprotected. They've been using the plasma fields in the Badlands to hide their movements, and when they emerge they're helpless without the Defiant. 


BASHIR: Can't they delay the convoy? I mean, if Captain Sisko is still alive, we have to give him every chance to 


KIRA: I raised the same objection myself and the orders still stand. Now, every minute spent arguing here is one less minute spent searching for the captain. 


WORF: Prepare for immediate departure. 


KIRA: Worf, there are over thirty thousand Federation troops in that convoy. You have fifty two hours, not one second longer. Understood? 


WORF: Understood. Defiant.

[Jasonb]

Star Trek TOS area we had one officer aid Kirk mortar shells. Deep Space Nine kind saw special troops in both nor battle to strong and in The Siege of AR-558. Is possible that the two different types UFP soldiers ground force. Since there uniform are different not nearly different as TNG and First contact uniform are.
One theory why Siege of AR-558 only lost 150 lost 100 men in about a 6 months period see effective Jem harder are soldiers is mortars require specialist likely kill lucky mine

Example possible Advance tactic training as from UFP commandos.