That reality has long shaped how the country trains its military officers — which is why the liberal government's push to merge the Army, Navy and Air Force academies is drawing fierce resistance from alumni associations, retired generals and the parents of current cadets.
The backlash centers on a fundamental objection: that a decision with profound implications for the country's defense architecture is being rushed through without adequate public debate, transparent review or protections for students already in the system.
The timing sharpens the stakes. As wars in Ukraine and the Middle East prompt nations to rethink military readiness, and as Washington quietly withdraws from its role as global guarantor, South Korea's defense industry has simultaneously emerged as a leading arms exporter, winning major overseas contracts and raising the country's international profile.
Critics find the contrast dissonant: Korean weapons are gaining ground abroad even as the domestic system for training the officers who would wield them is being restructured on a contested and largely unexplained rationale.
The government's proposal — a "2+2" model in which first- and second-year cadets would share a common curriculum at a new joint institution before dispersing to their respective service academies for advanced training — has been framed by the Defense Ministry as a way to strengthen jointness, reduce administrative redundancy and improve academic standards through ties with civilian universities.
Legislation could come as early as July, with implementation targeted for 2028.
Currently, the Army, Navy and Air Force academies operate separately as four-year institutions, with cadets choosing their service from the time of admission and receiving service-specific academic and military training.
The KMA alumni association rejected the argument that merging the academies would automatically strengthen joint operations. Retired officers at the meeting said jointness is built after officers first develop service-specific expertise, then learn to operate together through field exercises, staff assignments and professional military education.
They argued that the Army, Navy and Air Force require fundamentally different early training. The Army needs ground tactics and leadership; the Navy requires navigation and maritime operations; and the Air Force needs aviation-related education and pilot training. Compressing these into a two-year common program, they said, could weaken the professional identity and technical foundation of future officers.
“Putting the academies together is not jointness. It is uniformity,” retired Maj. Gen. Shin Sang-kyun said. “The more complex the battlefield becomes, with AI, drones and multi-domain operations, the more each service needs deeper specialization.”
“It is standardization. Jointness means operating together while maintaining each service’s strengths,” Shin added.
Shin said countries with large militaries or serious wartime requirements generally maintain separate service academies because officers must be ready to perform their duties immediately after commissioning. He said smaller militaries may choose integrated systems for economic reasons, but argued that South Korea’s security environment is different.
He also cited Venezuela as a case where academy integration under former President Hugo Chavez was pursued for political control rather than military effectiveness. Even North Korea, he said, operates a separate air force academy despite having a more centralized military structure.
Shin was especially critical of the proposed “2+2” model, saying it would delay service-specific education until the third year and weaken professional training.
He said the concern is particularly serious for the Air Force, where pilot training requires long-term preparation and high costs. Under the current four-year system, he said, only a portion of Air Force Academy graduates become fighter pilots despite intensive training.
“If that is difficult even under a four-year program, can it really be done in two years?” Shin said.
Shin also warned that allowing cadets to choose their service after two years of common education could create competition and hierarchy among the services, rather than jointness. He said the Air Force Academy could become more popular because pilot training may offer clearer post-service career paths, including opportunities in the civilian aviation sector, while the Army could become less attractive.
Critics also questioned why the government is focusing on the service academies when South Korea commissions officers through several different tracks.
The three service academies are the most visible and prestigious route, providing four years of residential academic and military education before cadets are commissioned as officers in their respective services. But they are not the only source of junior officers. South Korea also commissions officers through ROTC programs at civilian universities, officer candidate schools, the Korea Army Academy at Yeongcheon and other specialized tracks for medical, legal, chaplain and technical officers.
South Korea maintains a conscription-based military of about 450,000 active-duty troops, while facing North Korea’s estimated 1.2 million-strong force across one of the world’s most heavily fortified borders.
Participants said academy graduates account for only about 14 percent of newly commissioned officers, with the rest coming from other programs such as ROTC and officer candidate courses. That figure, they argued, raises questions about why the government is targeting the academy system if the stated goal is to strengthen jointness across the entire military.
“If merging the academies is truly essential to strengthening jointness, does that mean only the 14 percent trained through the academies will have jointness?” one retired officer said. “Are ROTC and other officers supposed to begin their careers without it?”
One father of a third-year cadet said cadets were reluctant to speak publicly because of their military status, leaving parents to raise concerns on their behalf. The parent said the families were not simply opposing reform, but asking the government to explain the plan, disclose its review process and listen to the cadets directly.
“Our children are not extras,” the parent said. “Please do not make them victims of a political experiment. Please protect the dreams of the children we sent for national security.”
Opposition to the plan has also extended beyond alumni circles. Kim Han-na, the wife of the late Chief Petty Officer Han Sang-guk, one of the six South Korean sailors killed in the 2002 Second Battle of Yeonpyeong, staged a one-person protest in Gwanghwamun last Friday against the proposed academy merger.
She said she decided to protest because she believed the merger proposal had not been sufficiently explained to the public.
“I thought merging the academies made no sense, so I came out onto the street,” Kim said.
The Defense Ministry has not yet publicly released a final version of the plan.
For many families, the issue is no longer an abstract debate over military education.
“These cadets entered the academy believing in a certain path,” another parent who requested anonymity said. “They deserve an explanation before that path is changed.”
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