"We will finalize the list of the weapons to be displayed during the event in a way to minimize possible impact on our readiness posture," an official said.

It will be the first time that an Armed Forces Day ceremony is held at an air combat command. Officials said it is to better mark the 70th anniversary of the foundation of the Air Force that falls on the same day.

As a centerpiece of the country's strategic targeting scheme against potential enemy forces, the warplane is expected to boost operational capabilities and strengthen the readiness posture against threats from all directions, according to Air Force officers.

The fighters can fly at a top speed of Mach 1.8 and carry top-of-the-line weapons systems, such as joint direct attack munitions.

The date of their full operational deployment is not known, as it is classified information.

North Korea has intensified its criticism against South Korea for the introduction of advanced weaponry, including F-35As, claiming that such a military buildup is aimed at destroying North Korea and threatens peace on the Korean Peninsula and in the region. (Yonhap)