There was a surprisingly good ABC News article about Syria recently, concerning the likely upcoming Syrian government offensive against the remaining rebel enclaves.
The article focuses on Iranian-backed militias coming closer to the Israeli border, and how dangerous that is.

Rebels in southern Syria who were once backed by the United States fear a new offensive by President Bashar Assad's forces, one that risks igniting a wider conflict.
For years, rebel forces known as the Southern Front received covert U.S. arms, funding and training to help them fight both the Syrian government and IS. But President Donald Trump ended the CIA program last year to try and extricate the U.S. from the civil war, an effort that was again thrown into doubt when an alleged chemical attack this month prompted U.S. and allied airstrikes against Assad's forces.

So the CIA armed Syrian rebels, but Trump stopped it. That's different from the normal narrative, in which we did nothing. There's no mention that those Syrian rebels were also head-chopping jihadists, but I'll take what I can get.
However, the interesting part is buried deep in the article.

The Eastern Lions Brigade, a rebel group that received covert U.S. support until late last year, fears a similar scenario in the south. In recent months, the group has retreated from attacks by government forces as well as IS militants, and is now largely confined to an area further east near the rebel-held al-Tanf military base, where U.S. special operations forces are housed.
"It will be an easy bite for the regime. There is no protection. They are exposed," said the rebel group's spokesman, Younis Salameh.
At the al-Tanf base, near Syria's borders with Iraq and Jordan, a separate Pentagon-funded effort to aid the rebels is still underway. The U.S. presence there is seen as crucial to preventing the completion of an overland route linking Iranian-backed forces from Tehran all the way to southern Lebanon — and Israel's doorstep.

Wait a second. A "separate Pentagon-funded effort to aid the rebels"?
How many pro-rebel efforts do we have? And why is this almost never reported in the American media?
When I did a search for Younis Salameh, I found this.

The Syrian military said on Tuesday that one of its jets crashed in southern Syria, state television reported, hours after Western-backed rebels said they had shot it down and captured the pilot.
...“The pilot is being treated for wounds and we are interrogating him,” said Younis al-Salameh, another official from Osoud al Sharqiya, one of two major rebel groups operating in the area.

As I mentioned before, the rebel forces around al-Tanf are being protected by U.S. forces directly.
I've been thinking about when we've done this in the past. Bay of Pigs comes to mind.
Afghanistan during the Soviet occupation. The Contras against Nicaragua.

It's from al-Tanf that the next step in our effort to overthrow Assad will come from.

officials told the Wall Street Journal, the Trump administration hopes to patch together an Arab contingent that would replace the U.S. military presence in Syria following the conclusion of the United States’ counter-ISIS mission.
According to these sources, U.S. officials such as new National Security Adviser John Bolton have reached out to officials in Egypt, Saudi Arabia, Qatar, and the United Arab Emirates to ask that they pledge billions of dollars and military contributions to the stabilization of the country following the defeat of the extremist group.
The new Trump proposal resembles past U.S. strategies for reducing its troop presence in foreign conflicts while shifting military duties to handpicked local surrogates. The strategy was known as “Vietnamization” during the war on Vietnam and “Iraqization” during the occupation of Iraq. In both cases, however, the U.S. largely footed the bill and the outcomes were panned as failures.

Well, why the Hell not?
"Pentagon" and "failure" go hand-in-hand, along with "killing civilians".
It's never stopped them.
In fact, the bigger the failure, the bigger the pay-off.