Basically, just the situation where the Army and the Marines didn't step into a mission set that left room for the development of the UDT/SEALs and the early resistance of both services to embrace UW roles.
Not sure what time period is being discussed, I’m seeing people post history from the 1600’s to the 50’s to present day, but I’ll fill in what I think you’re asking.
IMO most services don’t really want (or don’t appreciate) their SpecOps units. They cost a fortune to train, equip and deploy, and it’s not unusual to lose multiple men to training deaths during any RF01 cycle. Big army doesn’t like any of that and is run more like a 9-5, kind of casual business atmosphere that has no choice but to put up with very aggressive, well trained and mostly untouchable units who soak up money (beans and bullets) and won’t kiss their ass. I can only imagine that disdain is even more prevalent when one unit starts running missions in a battlespace controlled by a completely different service, and doesn’t answer to them, so some big brained desk hump decided it’s best to each have their own to give them a little more control over all the things above.
(*There was also some push years back to downsize the .mil and create smaller more specialized and better trained units. How that worked out is I guess a matter of opinion for those that experienced it.)
The senior leadership (unit commanders not CoS) generally dislike them (JSOC) because they have no real control over them, they look at them like cowboys, and have always had a general disdain for them, some simply because they never really did anything to test themselves and they’re already senior O’s.
(see: Shinseki and the Black Beret fiasco). That MF’r sent over 3Million dollars to communist China just to have enough black berets to issue to big army by the birthday of that year. Even though regulations stated that each piece of individual equipment must be made in the US. We fought against that at the time and got several of those contracts cancelled. What do you expect from a Clinton appointee. f***ing leg.
Lot of people who never served kind of view the entire military as this huge fighting force where everyone is trained the same, and don’t realize that a large portion of it is kind of (IMO) about as well trained as your neighborhood police dept, which is to say they’re all f***ed up and again it's just a regular business day for them. Very low standards.
Battlespace has always been an issue between services because they don’t think they need to report to other units who own the space, what their actions are going to be in any particular AO, whether that’s due to opsec, prepping for a larger mission that will include multiple regular units and that only special ops may have knowledge of at that point, or just a generally poor attitude of some leg O who hates these type of warriors.
I’ve trained in scenarios that used SEAL teams and Rangers (75th) together, and wasn’t all that far from Patilla Airfield (someone mentioned it earlier) when that went down (I was in Rio Hato at the time), we lost 5, they lost 4, both accounts IMO were due to leadership failures and bad intel).
But anyway from what we saw they’re great on/in the water, but once patrolling woods, mountains, deserts, they were visibly less confident, their land nav was weak, and their arrogance was muffled. Mind you this was during my time of the 80’s / 90’s. We used to shit on them for being so Hollywood with all their workout videos and f***ing hair gel and sunglasses on the beach type of bs. But that was just general unit to unit ball busting. Never anything more serious than that as we kept a professional respect for our meat and potato’s duties.
There may be some t-shirts out there with our Regimental Crest and the letters N.S.R.T. (Navy SEAL Rescue Team) above it. Just ball busting on each other but with a mutual love for being hard men doing hard things.
Regiment was, as
@Picton said earlier, very isolationist. To the point now that they don’t even rely on big army intel and stood up their own Ranger Intelligence Bn. Their compounds are completely fenced off and still to this day is run in a very spartan-esque existence. It’s a very hard unit to survive the daily grind in and the only unit in the army I believe that has the ability to remove a man simply for RFS (Released For Standards) at the whim of even the squad leader (Sgt E-5). Here one day, packed, signed out, room emptied and gone within 3-5 days. We called it “getting sent outside the fence” or “down the road” to some RA unit. If you were lucky you could ask 1st Group to take you in to spare you from big army.
Other guys would also head over to 1st Group down the street from us after their first few years because it was considered a nice break for your body. Group is run much differently than Regiment.
In those days (my time) Regiment was used frequently as perimeter security for the DBoys on multiple missions. Mogadishu is a good example of that. As is Operation Acid Gambit to rescue Kurt Muse from the Modelo Prison in Panama. Rangers fast rope in, secure the area surrounding the target and allow Delta to conduct their mission. Both operations also had birds from the 160th shot down.
That all changed during the GWOT, Regiment quickly went from being a spec ops QRF for Delta/SEAL and became a go to force for many different types of missions themselves outside of their historical mission set. They were/are the only DA (Direct Action) unit in the army.
As far as leaving a vacuum for SEAL’s to take more land missions I can’t rightfully say, that’s above my pay grade and probably evolved over several decades. They’ve (75th) always had their own tier 01 contingent in their ranks, the RRT’s (Ranger Reconnaissance Teams).
The Regiment was also the only unit in the military to have feet on the ground during GWOT for the entirety of the war. 20 yrs, one Regiment, they always had at a minimum a company sized element in action every single day of the war, sometimes multiple missions every single night, so it may just be (the vacuum) that there was so much happening over such a large and rough countryside in multiple countries at the same time, chasing and fighting small guerilla type units, that the other US units were needed and used due to their excellent abilities to adapt and get the job done.
Sorry if I’m all over the place with this reply. lol Lot of memories come up and maybe just rolling things together here.