One day in July, Rafiq slipped out of the world’ s largest refugee settlement in southern Bangladesh and crossed the border into Myanmar on a small boat. His destination: a ruinous civil war in a nation that he had fled in 2017.

Thousands of Rohingya insurgents, like 32-year-old Rafiq, have emerged from camps housing over a million refugees in Cox’s Bazar, where militant recruitment and violence have surged this year, according to four people familiar with the conflict and two internal aid agency reports seen by Reuters.

“We need to fight to take back our lands,” said Rafiq, a lean and bearded man in a Muslim prayer cap who spent weeks fighting in Myanmar before returning after he was shot in the leg.

“There is no other way.”

The Rohingya, a mainly Muslim group that is the world’s largest stateless population, started fleeing in droves to Bangladesh in 2016 to escape what the United Nations has called a genocide at the hands of Buddhist-majority Myanmar’s military.

A long-running rebellion in Myanmar has gained ground since the military staged a coup in 2021. It involves a complex array of armed groups - with Rohingya fighters now entering the fray.

Many have joined groups loosely allied with their former military persecutors to fight the Arakan Army ethnic militia that has seized much of the western Myanmar state of Rakhine, from which many Rohingya fled.

Reuters interviewed 18 people who described the rise of insurgent groups inside Bangladesh’s refugee camps and reviewed two internal briefings on the security situation written by aid agencies in recent months.

The news agency is reporting for the first time the scale of recruitment by Rohingya armed groups in the camps, which totals between 3,000 and 5,000 fighters.

Reuters is also revealing specifics about failed negotiations between the Rohingya and the Arakan Army, inducements offered by the junta to Rohingya fighters such as money and citizenship documents, as well as about the cooperation of some Bangladesh officials with the insurgency.

Several of the people - who include Rohingya fighters, humanitarian workers and Bangladesh officials - spoke on condition of anonymity or that only their first name be used.

Bangladesh’s government did not respond to Reuters’ questions, while the junta denied in a statement to Reuters that it had conscripted any “Muslims.”

“Muslim residents requested protection. So, basic military training was provided in order to help them defend their own villages and regions,” it said.

The two largest Rohingya militant groups - the Rohingya Solidarity Organisation (RSO) and the Arakan Rohingya Salvation Army (ARSA) - do not appear to have mass support in the camps in Cox’s Bazar, said Shahab Enam Khan, an international relations professor at Bangladesh's Jahangirnagar University.

But the emergence of trained Rohingya fighters and weapons in and around the camps is regarded as a ticking time bomb by Bangladesh, one security source said. Some 30,000 children are born each year into deep poverty in the camps, where violence is rife.

Disillusioned refugees could be drawn by non-state actors into militant activities and pushed further into criminal enterprises, said Khan. “This will then suck in regional countries, too.”

FIGHT FOR MAUNGDAW

After a boat-ride from near the camps to the western Myanmar town of Maungdaw around the midyear monsoon, Rohingya insurgent Abu Afna said he was housed and armed by junta troops.

In the seaside town where the military is fighting the Arakan Army for control, Rohingya were sometimes even billeted in the same room with junta soldiers.

“When I’d be with the junta, I would feel that I am standing next to the same people who raped and killed our mothers and sisters,” he said.

But the Arakan Army is backed by the majority Buddhist ethnic Rakhine community that includes people who joined the military in purging the Rohingya.

Reuters this year reported that the Arakan Army was responsible for burning down one of the largest remaining settlements of Rohingya in Myanmar and that the RSO had reached a “battlefield understanding” with the Myanmar military to fight alongside each other.

“Our main enemy isn’t the Myanmar government, but the Rakhine community,” Abu Afna said.

The military provided Rohingya with weapons, training and cash, according to Abu Afna, as well as a Bangladesh source and second Rohingya man who said he was forcibly recruited by the junta.

The junta also offered the Rohingya a card certifying Myanmar citizenship.

For some, it was a powerful lure. Rohingya have long been denied citizenship despite generations in Myanmar and are now confined to refugee camps where Bangladesh bans them from seeking formal employment.

“We didn’t go for the money,” Abu Afna said. “We wanted the card, nationality.”

About 2,000 people were recruited from the refugee camps between March and May through drives employing “ideological, nationalist, and financial inducements, coupled with false promises, threats, and coercion,” according to a June aid agency briefing seen by Reuters, which was shared on condition the authors not be named because it was not public.

Many of those brought to fight were taken by force, including children as young as 13, according to a UN official and two Rohingya fighters.

Cash-strapped Bangladesh is increasingly reluctant to take in Rohingya refugees and a person familiar with the matter said some Bangladesh officials believed armed struggle was the only way the Rohingya would return to Myanmar. They also believed that backing a rebel group would give Dhaka more sway, the person said.

Bangladesh retired Brig. Gen. Md. Manzur Qader, who has visited the camps, told Reuters his country’s government should back the Rohingya in their armed struggle, which he said would push the junta and Arakan Army to negotiate and facilitate the Rohingya’s return.

Under the previous Bangladesh government, some intelligence officials supported armed groups but with little coordination because there was no overall directive, Qader said.

Near the camps in Cox's Bazar, where many roads are monitored by security checkpoints, dozens of Rohingya were taken earlier this year by Bangladesh officials to a jetty overlooking Maungdaw and sent across the border by boat, said Abu Afna, who was part of the group.

“It’s your country, you go and take it back,” he recalled one official telling them.

Reuters was unable to independently verify his account.