America troop deployments rarely get any attention, and that's twice as true for Africa.
So when U.S. Africa Command (AFRICOM) confirmed that it had sent troops to Libya to back one of the three competing governments, no one cared.
The same is true for Somalia, when we escalated our involvement in the past few months.

The U.S. military invasion of the African continent is expanding faster than anywhere outside of the Middle East even before the buildups in Somalia and Libya.

“At any given time, you will find SOCAFRICA conducting approximately 96 activities in 20 countries,” Donald Bolduc, the U.S. Army general who runs the special operations command in Africa (SOCAFRICA), wrote in an October 2016 strategic planning guidance report....
Bolduc indicated his solution was the “acceleration of SOF [special operations forces] missions [filling] a strategic gap as the military adjusts force structure now and in the future.” Translation: U.S. commandos “in more places, doing more” in Africa going forward.
At the same time, Bolduc says the U.S. is not at war in Africa....

The 2016 SOCAFRICA report lists seven terror groups by name - al-Qaida in the Lands of the Islamic Magreb, ISIS, Ansar al-Sharia, al-Murabitun, Boko Haram, the Lord’s Resistance Army, and al-Shabaab.
Four of these groups do not operate in Libya or Somalia.

So what are we doing there?

They do a lot of humanitarian operations on the continent, or things that look humanitarian. This is the only thing they like to talk about. But if you listen when officers talk to each other, or talk to military contractors, or read internal memos, you hear a very different story. They don’t talk about the humanitarian operations—they talk about Africa as a battlefield or a continent where they’re “at war.” This is diametrically opposed to the humanitarian veneer that they try and project to the public.

It's only a matter of time before our forces in Africa get ambushed, and the reaction to the news of dead American soldiers in a strange country will be, "Did you even know we had troops there? WTF is going on?"
That isn't the only problematic scenario.

In the State Department’s Human Rights reports that they put out every year, if you look at Chad, the country is cited every year for various forms of human rights abuses carried out by security forces: extrajudicial killings, torture, assault. Also United Nations reports, Amnesty International, Human Rights Watch, they’ve all cited Chad for military crimes outside of its borders. This is the force that the United States is hanging its hat on.
Chad’s forces just a few years ago were involved in a report from Amnesty International about a massive recruitment of child soldiers. So this is one of the U.S.’s main proxy forces and it institutes them.

It's not that this secret war is limited to Africa.
We've recently sent troops into Yemen, and they just happen to be in Yemen's oil-producing region. What a coincidence.