North Korea will be out gunned at every turn in a war with the US

National Interests:

The United States has substantial air, land, and sea forces stationed in South Korea, as well as several units based in Japan and the western Pacific earmarked for a Korean contingency. Together, these forces far exceed the firepower of North Korea’s armed forces and represent a powerful deterrent not just against Pyongyang but any potential adversary in the region.

The first U.S. forces that would be involved in a North-South Korean conflict are those currently based in South Korea. On the ground, the U.S. Army rotates a new armored brigade into South Korea every nine months—currently the 2nd Brigade Combat Team, 1st Cavalry Division. Each brigade is manned by 3,500 soldiers and consists of three combined arms battalions, one cavalry (reconnaissance) battalion, one artillery battalion, one engineer and one brigade support battalion. Armored brigade combat teams typically consist of approximately 100 M1A2 Abrams tanks, 100 M2A3 Bradley infantry fighting vehicles and eighteen M109-series self-propelled howitzers.

The army in South Korea also maintains the 2nd Infantry Division’s Combat Aviation Brigade, equipped with approximately sixty Apache attack helicopters, Blackhawk and Chinook transports. The 210th Artillery Brigade, equipped with M270 Multiple Launch Rocket Systems provides long range artillery fire, while the 35th Air Defense Artillery Brigade provide Patriot missile coverage of Osan and Suwon Air Force Bases. The 35th Brigade also operates the AN/TPY-2 missile defense radar and six Theater High Altitude Area Defense (THAAD) launch vehicles recently sent to the country to beef up anti-missile defenses.

The other major component of American power in Korea is U.S. tactical aviation. The U.S. Air Force maintains the 51st Fighter Wing at Osan Air Base, consisting of the 25th Fighter Squadron at equipped with A-10C Thunderbolt II ground attack jets and the 36th Fighter Squadron with F-16C/D Fighting Falcon fighters (about forty-eight aircraft in all). The 8th (“Wolfpack”) Fighter Wing at Kunsan Air Base consists of the 35th and 80th Fighter Squadrons, which fly a total of forty-five F-16C/Ds. The A-10Cs have the mission of close air support, while the F-16C/Ds are responsible for air interdiction, close air support and counter-air.

Beyond the Korean Peninsula the United States maintains an array of forces ready to intervene. U.S. military forces in Japan include the forward-deployed aircraft carrier USS Ronald Reagan, two guided missile cruisers and seven guided missile destroyers. Many of the cruisers and destroyers have ballistic missile defense capability although two of the destroyers, Fitzgerald and McCain, are out of action due to collisions with civilian merchantmen. The Reagan and surface warships are all based at Yokosuka, Japan.

Further south, Sasebo, Japan is the home of the amphibious assault ship USS Bonhomme Richard and the ships of its amphibious task force. Together, this amphibious force can lift a marine infantry battalion reinforced with armor, artillery and aviation assets collectively known known as Marine Expeditionary Unit. Sasebo is also the home of the 7th Fleet’s four minesweepers. The result is a well-balanced force that can execute a wide variety of missions, from ballistic missile defense to an amphibious assault.
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There is much more.

The Marines also have substantial forces in the region.   The Guam based bomber squadrons have already been flexing their muscles along with fighter squadrons in teh region.  I suspect that Tomahawk missiles will be a large component of early attacks on North Korea should hostilities resume.