SINJAR, Iraq (AP):

One by one, the flags belonging to a patchwork of armed forces were lowered in a northern Iraqi town once brutalized by the Islamic State group. The territorial claims symbolized by each were replaced by the fluttering of just one: The Iraqi state’s.

The hoisting of the national flag in Sinjar, home to Iraq’s Yazidi religious minority, is the result of a deal months in the making for the federal government to restore order from a tangled web of paramilitaries, who sowed chaos in the district during the bedlam following liberation from IS three years ago.

This month, Iraq’s army deployed there for the first time since the 2003 fall of Saddam Hussein.

Lt. Imad Hasan hiked up a rocky ascent overlooking the deserted ruins of Sinjar’s old town, vacant since IS was dislodged. His gaze fell on a lookout on the other side of the mountain — the last, he said, that belongs to a local affiliate of an outlawed Kurdish guerrilla group, known as the PKK.

“We have problems with them,” he said. “Their leaders have agreed to withdraw, but some of their fighters have not.”

Sealing the deal was hard enough. Implementing it brings new problems. Critics say it will take more than a change of flags to cement rule of law in Sinjar.

The Yazidis, traumatized by the mass killing and enslavement that IS unleashed against them, have no trust in the Iraqi authorities they say abandoned them to the militants’ brutality. With the central government weak, they fear militias — including Iranian-backed Shiite factions — will gain sway over them.

The militias policing Sinjar the past three years are a mix. They include peshmerga fighters from Iraq’s Kurdish autonomy zone, as well as the PKK and its affiliate made up of local Yazidi fighters, called the Sinjar Resistance Units or YBS. There are also Yazidi units belonging to the Popular Mobilization Forces, an umbrella group of state-sanctioned paramilitaries created in 2014 to defeat IS.

There are signs of recovery of Sinjar. Its city center hummed with shoppers, merchants — and the odd Iraqi army tank. More of the 200,000 Yazidis displaced by the 2014 IS onslaught are coming back — some 21,600 returning between June to September, many times the rate of previous years.

But scratch the surface, and almost everyone harbors raw, unresolved trauma. Everyone vividly recalls the IS attack that murdered fathers and sons, enslaved thousands of women and sent survivors fleeing up Sinjar mountain.