The Mountain Passes North of Myawaddy: Where Myanmar's Junta Lost the War

On the morning of April 11, 2025, Captain Aung Kyaw Moe of the Myanmar Army's 275th Light Infantry Battalion walked down from his command post on Dawna Range, crossed a bamboo bridge over a creek swollen with spring rain, and surrendered his sidearm to a twenty-two-year-old Karen National Liberation Army fighter named Saw Hla Htoo. Behind the captain came seventeen soldiers. Some carried their rifles by the barrel, muzzle down. Others had already taken theirs apart. They had been holding the ridgeline for eleven months. The food drops had stopped in February. The last helicopter evacuation had been in December.

Saw Hla Htoo had joined the KNLA three years earlier, after soldiers burned his village in Hpa-an Township. He had been fifteen. Now he was accepting the surrender of an officer twice his age who commanded a unit that had once controlled the highway between Myawaddy and Kawkareik—the main trade route between Myanmar and Thailand, through which forty per cent of Myanmar's legal border commerce once flowed. The captain asked for water. Saw Hla Htoo gave him a canteen. Then he radioed his commander. By nightfall, the ridge was theirs.

The fall of Myawaddy had come three weeks earlier, on April 10, when the Karen National Union, the Karenni National Progressive Party, and units of the People's Defence Force—the armed resistance that emerged after the February 1, 2021, coup—had overrun the last Tatmadaw positions in the border town. It was the most significant military defeat the junta had suffered since seizing power. What happened afterward was more significant still: a year later, in April 2026, the military has not come back.

The Road They Could Not Hold

The Tatmadaw had ruled Myanmar, under various constitutional arrangements, since 1962. After the coup, it controlled every major city, every international airport, every regional command. It had tanks, jets, helicopter gunships. The armed ethnic organizations that had fought the military for decades—the Karen, the Kachin, the Shan, the Rakhine—controlled peripheries, not highways. The PDF, formed hastily by students, farmers, former police officers, and army defectors, controlled villages, hillsides, jungle camps.

But the military's strength was logistical, not popular. It relied on supply lines that stretched from Naypyidaw, the capital built by the previous junta in the geographic center of the country, to garrisons scattered across seven states and seven regions. When those lines were cut, the garrisons became islands. And in October 2023, three ethnic armies in northern Shan State—the Myanmar National Democratic Alliance Army, the Ta'ang National Liberation Army, and the Arakan Army—launched Operation 1027, a coordinated offensive that severed the roads between Mandalay and the Chinese border. Within three months, the military had lost more than two hundred outposts.

The eastern front followed. In January 2025, the KNLA and PDF forces began pushing toward Myawaddy from positions in the hills. The Tatmadaw sent reinforcements from Mawlamyine and Hpa-an, but the convoys were ambushed before they reached the town. Air support was sporadic. The junta's fleet of ageing Mi-35 helicopters and Hongdu JL-8 jets could not operate safely over contested territory; the resistance had acquired Chinese-made FN-6 surface-to-air missiles, reportedly via black-market arms dealers in Thailand and sympathetic elements within the Thai military. By March, the garrison in Myawaddy was surrounded. On April 10, the regional commander, Brigadier General Myo Kyaw Oo, fled across the Moei River into Thailand. Thai border police detained him briefly, then allowed him to return. He has not been seen since.

What Thailand Saw Across the River

Mae Sot, the Thai town directly across the Moei River from Myawaddy, has long served as a conduit for trade, refugees, and information. When the battle for Myawaddy intensified in March 2025, residents of Mae Sot stood on the riverbank and watched tracer fire arc over the town. Some filmed on their phones. Thai military units deployed to the border did not intervene. Thailand's official position, articulated by Foreign Minister Maris Sangiampongsa in a statement on April 12, 2025, was that the conflict was "an internal matter for Myanmar."

But Thailand's interests in Myanmar are not neutral. The Yadana and Yetagun natural gas fields in the Andaman Sea supply approximately twenty per cent of Thailand's electricity via pipelines that run through Karen State and terminate in Kanchanaburi Province. Those pipelines have been attacked six times since the coup. The Friendship Bridge at Myawaddy, which once handled $1.2 billion in annual bilateral trade, has been closed since April 2025. Thai companies with investments in Myanmar—including PTT Public Company Limited, the state oil and gas conglomerate, and Charoen Pokphand Group, the agribusiness giant—have lobbied the government in Bangkok to maintain relations with the junta. At the same time, Thailand's military, which has staged twelve successful coups since 1932, has historically maintained quiet ties with Myanmar's ethnic armed groups as a hedge against instability.

Since the fall of Myawaddy, that balance has become more precarious. The Karen National Union now controls the border crossing. It has kept the Friendship Bridge closed, citing security concerns and the need to establish "administrative capacity." In practice, this means the KNU is determining who and what crosses. In interviews conducted in Mae Sot in March 2026, traders described a new system: goods can cross, but only after paying fees to the KNU's Border Trade Committee, a body established in June 2025. The fees are lower than the junta's, but the volume of trade has not recovered. Thai businesses are waiting to see who will ultimately control the territory.

The Soldiers Who Kept Surrendering

Captain Aung Kyaw Moe is now in a detention facility in Lay Kay Kaw, a Karen-controlled town fifty kilometers north of Myawaddy. He shares a room with eleven other captured officers. They are not mistreated, according to a March 2026 report by the International Committee of the Red Cross, which has been granted access to detainees held by ethnic armed organizations. They are given two meals a day. They are allowed to write letters, though mail service is erratic. They are not allowed to leave.

In an interview conducted through an intermediary in March 2026—detainees are not permitted direct contact with journalists—the captain described the final months on the ridge. Resupply flights were supposed to come every two weeks. After January, they stopped. The battalion had been told that reinforcements were coming by road. They never came. In February, soldiers began hunting in the forest. In March, they began discussing surrender. The captain said he opposed it. He was a career officer; his father had served in the same battalion. But by April, he said, there was no choice. Half his men were sick. Two had died from infected wounds.

"I thought someone would come for us," he said. "I thought the Army does not leave its men."

The Junta's Strategic Contraction

In Naypyidaw, the junta has adopted what military analysts call a strategy of "defensive consolidation." Senior General Min Aung Hlaing, the coup leader and commander-in-chief, has not publicly commented on the loss of Myawaddy. State media has not reported it. Instead, the military has concentrated forces around Yangon, Mandalay, and Naypyidaw—the urban core that contains approximately forty per cent of Myanmar's population. It has withdrawn from rural areas where control was contested. It has stopped trying to hold roads it cannot defend.

This is not a temporary retreat. According to a leaked memorandum from the military's Directorate of Psychological Warfare and Civil Affairs, dated February 2026 and obtained by the Myanmar Witness investigative group, the Tatmadaw has reclassified twenty-three townships in Kayah, Kayin, Chin, and northern Rakhine states as "non-priority zones." Troops in those areas have been ordered to withdraw to "strategic towns" or, where withdrawal is not possible, to "negotiate local ceasefires with opposition forces." The memorandum does not use the word surrender. It uses the phrase "tactical disengagement."

What the Ethnic Armies Want Now

On March 15, 2026, representatives of the Karen National Union, the Kachin Independence Organization, the Chin National Front, and the National Unity Government—the shadow administration formed by elected lawmakers ousted in the coup—met in Mae Hong Son, Thailand, for three days of talks. The meeting was not publicized. According to a participant who spoke on condition of anonymity, the agenda was simple: what comes after the junta falls.

The ethnic armed organizations have been fighting for autonomy—or, in some cases, independence—since Myanmar's founding in 1948. The coup gave them common cause with the PDF and the NUG, but their goals are not identical. The KNU wants a federal system in which Karen State has its own army, police, and budget. The Arakan Army wants the same for Rakhine State, where it now controls thirteen of seventeen townships. The PDF, composed largely of Bamar majority fighters, wants to restore the democratic government overthrown in 2021. The NUG has endorsed federalism in principle, but its leadership remains dominated by Bamar politicians from the National League for Democracy.

The Mae Hong Son talks ended without a joint communiqué. But participants described a tentative consensus: the ethnic armies would continue to cooperate with the NUG in opposing the junta, but they would not disarm when the war ends. "We have fought for seventy years," said Padoh Saw Taw Nee, the KNU's foreign affairs secretary, in a March interview in Mae Sot. "We will not give our weapons to a government in Naypyidaw and hope they keep their promises this time."

The War That Became Wars

The fall of Myawaddy was a turning point, but not an endpoint. The Tatmadaw still holds Yangon, Mandalay, and the central heartland. It still has artillery, armor, and air power, even if it cannot deploy them effectively. It still controls the banks, the ports, the official economy. And it still receives weapons: according to a March 2026 report by the UN Special Rapporteur on Myanmar, Tom Andrews, the junta has imported $1.4 billion in arms and dual-use goods since the coup, primarily from Russia, China, and Singapore. The flow has slowed, but it has not stopped.

Meanwhile, the resistance has begun to fracture. In Sagaing Region, PDF units have clashed with each other over control of smuggling routes and extortion rackets. In Shan State, the Myanmar National Democratic Alliance Army—one of the three armies that launched Operation 1027—has signed a ceasefire with the junta, reportedly under pressure from China, which considers the MNDAA a proxy. The Arakan Army, the most disciplined and best-funded of the ethnic organizations, has stopped coordinating with the NUG and is governing Rakhine State as a de facto independent territory.

The humanitarian toll continues to mount. The UN estimates that 18.6 million people—more than one-third of Myanmar's population—now require assistance. Malnutrition rates in conflict-affected areas have doubled since 2021. The health system, already weakened by a doctors' strike that began immediately after the coup, has collapsed in rural areas. In Karen State, where the KNU has established parallel governance structures, a single field hospital in Mutraw District serves a population of 120,000. It has two doctors, both trained as medics during the war. It has no X-ray machine, no blood bank, no operating theatre. Patients with serious injuries are carried to the Thai border, a journey that can take three days.

The Ridge Where No One Came

Saw Hla Htoo is still stationed near the ridge where Captain Aung Kyaw Moe surrendered. He turned twenty-three in January. He has been a soldier for nearly a third of his life. When asked what he will do when the war ends, he laughed. "The war will not end," he said. "There is always another war."

He described his routine: patrols along the old military positions, checking for unexploded ordnance, watching the road below. The KNLA has not repaired the road. It is easier to defend if it remains impassable. Thai logging trucks still cross the border at night, he said, but they pay the KNU, and the KNU allows it. "We need money," he said. "Guns cost money. Food costs money. Everything costs money."

He has not been home since he joined the KNLA. His village no longer exists. It was burned in 2022 during a military clearance operation. His mother and sister fled to Mae La refugee camp in Thailand. He has not seen them. Fighters are not allowed to cross into Thailand; the Thai authorities consider them illegal combatants. He speaks to his mother sometimes on a mobile phone that gets signal near the ridge. The last time they spoke, she asked when he would come home. He did not know how to answer.

Captain Aung Kyaw Moe is still in detention in Lay Kay Kaw. He has written six letters to his family in Yangon. He does not know if any have been delivered. The KNU says detainees will be released when the war ends, but it has not defined what that means. The captain is forty-two. If he is released in five years, he will be forty-seven. The Army will not take him back. He has no other trade. In the interview, he was asked what he would do. He said he did not think about it. "I think about the ridge," he said. "I think about the men who did not come down."

The ridge is quiet now. The KNLA has not stationed a permanent unit there. There is no strategic value in holding it; the road below is gone, and the war has moved elsewhere. In March, a team from the Mines Advisory Group, a British demining NGO, surveyed the area and found sixty-three unexploded artillery shells, nineteen grenades, and more than three hundred rounds of small-arms ammunition scattered across the former military positions. The team marked the sites with red tape and left. The ridge will not be cleared for years. There is no money, and there are hundreds of ridges just like it.

On the Thai side of the river, life in Mae Sot continues. Markets open. Trucks wait at the border. Traders watch the situation and wait for clarity. Across the river, in the town the Tatmadaw can no longer reach, the flag of the Karen National Union flies over the old customs house. No one knows how long it will stay there, or what flag will replace it.