ISIS continues to gain substantial ground in Syria, despite nearly 800 airstrikes in the American-led campaign to break its grip there.

At least one-third of the country’s territory is now under ISIS influence, with recent gains in rural areas that can serve as a conduit to major cities that the so-called Islamic State hopes to eventually claim as part of its caliphate. Meanwhile, the Islamic extremist group does not appear to have suffered any major ground losses since the strikes began. The result is a net ground gain for ISIS, according to information compiled by two groups with on-the-ground sources.

In Syria, ISIS “has not any lost any key terrain,” Jennifer Cafarella, a fellow at the Washington, D.C.-based Institute for the Study of War who studies the Syrian conflict, explained to The Daily Beast.

Even U.S. military officials privately conceded to The Daily Beast that ISIS has gained ground in some areas, even as the Pentagon claims its seized territory elsewhere, largely around the northern city of Kobani. That’s been the focus of the U.S.-led campaign, and ISIS has not been able to take the town, despite its best efforts.

Other than that, they are short on specifics.

“Yes, they have gained some ground. But we have stopped their momentum,” one Pentagon official told The Daily Beast.

A map developed by the Coalition for a Democratic Syria (CDS), a Syrian-American opposition umbrella group, shows that ISIS has nearly doubled the amount of territory it controls since airstrikes began last year.

“Assessing the map, ISIS has almost doubled its territorial control in Syria. But more importantly, the number of people who now live under ISIS control has also increased substantially,” CDS political adviser Mouaz Moustafa said.

With the fall of that much territory into ISIS hands, Syrians who once lived in ungoverned or rebel held areas are now under ISIS’s grip. Of course, in an irregular war like this one, control of people is far more important than control of territory. In that regard, too, things appear to be going in the wrong direction.

In the first two months following American airstrikes, about a million Syrians who had previously lived in areas controlled by moderates now lived in areas controlled by extremist groups al Nusra or ISIS, according to CDS, citing conversations with European diplomats who support the Syrian opposition.

The area of ISIS’s expansion includes large segments of the Homs Desert, which begins far south of the contested northern city of Aleppo. It stretches below the presumed capital of ISIS in Syria, Raqqa, and all the way to the Iraqi border. It is largely rural and not an area that ISIS has had to fight for. Rather the group took control of uncontested parts of the countryside while skirting key regime strongholds in the area, Cafarella said.

But that does not mean that land is not valuable to ISIS. That newly acquired terrain allows ISIS troops to target and threaten more valuable areas, Cafarella said.

Since the U.S. campaign began in August, “there are little buds of ISIS control in eastern Homs, al Qalamoun [which borders northern Lebanon], and southern Damascus that do appear to be growing because of that freedom of operation that can connect those western cells to key ISIS terrains in Raqqa and Deir ez Zour” in northern and eastern Syria.

Moustafa, the CDS political adviser, blamed ISIS territorial gains on a lack of “strategic coordination between coalition strikes and moderate forces inside Syria, meaning that the Free Syrian Army and aligned groups cannot use the strikes to retake territory.” Further, Moustafa told The Daily Beast, coalition strikes have given other extremist groups sympathy for ISIS.

One frustration of the Syrian opposition groups is that the bombing campaign has been focused at the heart of ISIS controlled territory, rather than at the front lines, where ISIS territorial gains could be pushed back.

“The coalition strikes seem similar to drone campaigns in Yemen or Pakistan, targeting only leadership. The front-line strength of ISIS has undoubtedly increased even as some of these targeted strikes take out mid-level individual leaders,” Moustafa said.

Of course, opposition groups have an incentive to portray the battlefield in a way that leads to more military strikes against both ISIS and the Bashir al Assad regime. Regardless, both opposition groups and the military agree ISIS has advanced its ground campaign.

As of Sunday, the U.S. and its coalition partners had conducted 790 airstrikes in Syria, according to Pentagon statistics. In all, the U.S. has spent $1.2 billion on its campaign against ISIS in Iraq and Syria.

In its public comments, the U.S. military has said repeatedly the effort against ISIS is on the right track. However it often does this by conflating its war in Iraq and Syria. Ask a question about what is happening in Syria, and U.S. officials will stress that ISIS has not gained ground in Iraq. Ask if the U.S. effort is working in Syria, and the military often points to the fact that ISIS has failed to take control of Kobani.

During a Jan. 6 press briefing, for example, when a reporter asked “where ISIS’s relative strength is right now,” Navy Rear Adm. John Kirby replied by talking exclusively about the U.S. effort in Iraq, naming cities were the military believed ISIS’s momentum has been “halted.”

When the reporter pressed for an answer on what was happening in Syria, Kirby struggled, saying, “I couldn’t give you a—a specific point at which, you know, we believe, well geez, we’ve halted their momentum. It—it’s come slowly, in various stages. But I think it’s safe to say that over the last three to four weeks, we—we’ve been confident that that momentum has largely been blunted.”

On Friday, Kirby proclaimed that ISIS had lost 700 square kilometers since the campaign began—over half the size of New York City or about four times the size of the District of Columbia. But the Pentagon spokesman could not say what percentage that area marked of total ISIS-controlled land. Nor could he say if that loss was in Iraq, Syria, or combined in both nations. As Kirby asserted: “I’m frankly not sure how relevant that is. I mean, it’s—they have less ground now than they did before. They’re trying to defend what ground that they have. They’re not going on the offense much, and they’re really trying to preserve their own oxygen.”

The American military has not been able to take full advantage of the difficulties ISIS is facing. A worldwide drop in oil prices threatens the recently declared state’s ability to raise revenue, while declining standards in public services, distribution of aid, and provision of electricity threaten to undercut the group’s support across the territories it controls. ISIS has also not been able to follow through on its military quest to challenge the Iraqi government all the way to Baghdad.

The U.S. military stressed it is waging an “Iraq first” war, that is focused on eliminating ISIS from that country first. There, the U.S. can turn to Iraqi troops on the ground to assess its efforts. But there is no equivalent resource on the ground in Syria. Perhaps because of that, the U.S. military has offered a far more detailed assessment of the air campaign in Iraq than the one in Syria.

The Combined Joint Task Force in charge of the American air campaign refused to answer a Daily Beast query about ISIS gains in Syria, even as it striking targets there. U.S. Central Command replied, “As a matter of policy we do not discuss intelligence issues.”

Information on the maps:

The maps provided by the Coalition for a Democratic Syria show the areas controlled by moderate Syrian rebels, the Syrian regime, ISIS, Syrian al Qaeda affiliate al Nusra, as well as territories contested by these groups. The maps were developed by a field team from the Coalition for a Democratic Syria (CDS), an umbrella group of Syrian American organizations. The maps were sourced through on-the-ground networks including civilian councils, humanitarian organizations, armed actors, and media monitoring of independent Syrian channels.