Here’s what would happen in a war between North and South Korea

by Blake Stilwell

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These days, it seems like countries don’t invade each other like they used to. It just seems like they’d rather do small, covert raids or just outright overthrow a hostile government.

Countries do still invade one another. Ethiopia invaded Somalia in 2006. Israel invaded Lebanon that same year. America invaded Iraq because… well, just because. But the world’s most recent invasions weren’t really conducted with the idea of actually annexing territory

Still, there are plenty of powder kegs out there: India vs. Pakistan, Iran vs. Saudi Arabia, or China vs. all of its neighbors. And then there’s the Korean Peninsula – the most volatile country vs. country situation in the world.

After almost 70 years of animosity, a constant state of war (there was never a real end of the war, only an armistice… and North Korea pulled out of that in 2013), and the continued acts of violence between the two, here’s a situation that could blow up at any time.

It’s actually that threat of widespread mutual destruction that keeps the conflict from boiling over. The 1950-1953 Korean War was a disaster for both sides, and that fact is largely what drives North Korean military policy. It’s what keeps the people supporting the regime: animosity toward the U.S. and South Korea.

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North Koreans either remember the war firsthand or through the stories from their grandparents. Fighting between North and South Korean forces was particularly brutal and as a result, there is no reason to believe either side would pull punches today.

“Over a period of three years or so, we killed off — what — 20 percent of the population,” Air Force Gen. Curtis LeMay, head of the Strategic Air Command during the Korean War, told the Office of Air Force History in 1984.

Both countries have significant military power. South Korea has one of the most powerful militaries in the world, with 3.5 million troops. North Korea has 5 million troops with another 5 million who can fight in a protracted war. The North Korean Songun policy means the military comes first in terms of food, fuel, and other materials before any are given to the population at large. Mandatory conscription (for a 10-year enlistment) means that most North Koreans have some form of military experience.

The North also boasts 605 combat aircraft and 43 naval missile boats, but the (North) Korean People’s Air Force’s most numerous fighter is the subsonic MiG-21, which first debuted in 1953. Their latest model is the aging MiG-29, and it dates back to the 1970s. And they’re all armed with Vietnam War-era ordnance.

In terms of military technology, North Korea’s pales in comparison to the South. South Korea is one of the most technologically advanced countries in the world.

The South’s GDP is 50 times greater than the North’s and they spend almost five times as much as North Korea on defense. Since it can’t keep up in traditional combat arms, the North is beefing up its unconventional warfare capabilities, including chemical and nuclear weapons, along with the ballistic missiles to deliver them. It can’t deliver the weapons by air because their antiquated air forces would be easy pickings for the U.S. F-22 Raptor squadron on the Peninsula.

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A Mig-21 aircraft lands during the North Korea 2016 air show

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The North is also hampered in terms of alliances. During the Korean War, the Korean Communists were pushed all the way to the Yalu River. It was only after the Chinese intervened with massive manpower and materiel that the Communists were able to form any kind of counterattack. Chinese intervention for the North these days is questionable at best, given its extensive overseas economic ties.

In fact, it might even be in China’s best interest to invade North Korea itself, to give a buffer zone between China and a collapsed North Korean government or worse, U.S. troops right on the border.

Whereas South Korea maintains a tight alliance with the United States, who has 30,000 troops of their own stationed there, 3,800 in Japan, and 5,700 on Guam, along with significant air and naval forces in the region.

A North Korean attack on the South would give the north a slight advantage in surprise and initiative… for a few days. Allied forces will respond instantly, but the North will still have the initiative.

Retired Army General James Marks estimates they would have that initiative for four days at most. When the first war was launched across the Demilitarized Zone, the DMZ wasn’t quite as defended as it is today. No one was expecting the attack and the bulk of U.S. forces had been withdrawn to Japan.

Today, an assault across the 38th parallel (the North-South border, along which the lines are divided) is tantamount to slow, grinding, probably explosive death.

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North Korea will open with artillery and rocket fire from positions on the North slopes of the mountains just across the border. The North has the world’s largest artillery force with 10,000 pieces in their arsenal. The bulk of these forces are at the border, with much of the rest around Pyongyang and near Nampo, the site of their electricity-producing dam.

It is likely that the South Korean capital of Seoul, just 35 miles from the border, would be the first target and would be devastated in the opening salvos. With the artillery on the North side, hidden in the mountains, there would be little warning of an attack and U.S. and South Korean air forces would have trouble penetrating the North Korean air defenses.

Air operations would be tricky because the North keeps tight interlocking lines of antiaircraft guns and surface-to-air missile systems. Pyongyang itself is a “fortress.” North Korean special operations forces would be inserted via submarines along both coasts and through tunnels dug under the DMZ (many have been found in previous years).

Latest reports suggest they would use special operations to deliver chemical attacks and dirty bombs in the South. They also have significant biological weapons facilities in the North that they tested on their own citizens.

The North would also activate sleeper agents in the South to direct missile and artillery fire. South Korean intelligence estimates up to 200,000 special operators are in the North Korean military, trained to fight Taliban-like insurgencies.

The U.S. air assets in the area will establish air superiority over the region, destroy air defenses, attempt to take out the artillery and missile batteries, and then destroy Northern command and control elements.

Allied air-power will target infrastructure like bridges and roads, especially the unification highway linking the capital at Pyongyang with the border, to keep Northern forces from being able to move effectively inside their own country. The U.S. would also make humanitarian air drops outside of major cities to draw noncombatants out of the cities and make targeting regime figures much easier.

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After the conventional fighting, the question is if North Korea will use its nuclear weapons. It is estimated to have up to eight weapons and ballistic missile technology capable of reaching U.S. and South Korean forces in the Korean Peninsula, Japan, and all the way to Guam.

However, experts cannot confirm that the North has ever successfully used a warhead on any of its missiles. If the North does use its nuclear arsenal, nuclear retaliation from the U.S. isn’t a forgone conclusion, especially if U.S. forces have the opportunity to destroy most of the North’s nuclear weapons.

A recent Pentagon war game against the fictional country of “North Brownland,” a country whose dynastic family regime had nuclear weapons that had to be recovered during a regime collapse, found that U.S. troops didn’t fare well in retrieving those weapons. V-22 Osprey aircraft were cut off from the rest of the allied forces and surrounded by the enemy.

The result was the United States would have to fight through the countryside to the North’s estimated 100 nuclear-related sites. In all, it took the U.S. 46 days and 90,000 troops to secure those weapons.

In the end, the North – despite some early successes – would lose. They would be able to inflict massive devastation with conventional weapons in Seoul and near the border areas. The toll on civilians would likely be massive if they used their biological and chemical stockpiles, and even more so if they used the nuclear arsenal. Special forces would likely detonate their nukes in the border areas for fear of being caught trying to move South.

The U.S. would quickly establish air superiority while ground forces bypassed the heavily defended DMZ area. Once the artillery and missile batteries were taken out, the advanced technology, mobile armor, helicopter support, and airpower would quickly overwhelm the large infantry formations and their associated WWII-era tactics. The hardest part of subduing North Korea would be unifying the Korean people and taking care of the North’s backward and likely starving populace.

The hardest part of subduing North Korea would be unifying the Korean people and taking care of the North’s backward and likely starving populace.

The U.S. and South Korean governments might want to just keep the North at bay instead of overrunning the government completely. A 2013 RAND Corporation research paper estimated the cost of unification to be upwards of $2 trillion dollars. This is not only to pay for the

This is not only to pay for the war but for food for the population and the restoration of all the infrastructure the Kim regime neglected over the past sixty-plus years. Gen. Marks believes the North and South will continue to only use short, contained attacks on each other, making a full-scale war unlikely.

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This article was originally published on “We Are The Mighty.

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