Hundreds of South Korean soldiers on Thursday (January 8) conducted an exercise in heavy snowfall in Pyeongchang, about 180km (113 miles) east of Seoul.
More than 150 Chunma Special Force Army members stripped off their shirts and shouted army slogans during a physical strength training exercise.
Braving the icy-cold weather, the soldiers hit the slopes of the snow-covered mountains as part of the winter military drill.
The special winter training is aimed at increasing soldiers' endurance skills to their limits.
The army pledged to be ready against any possible attack from North Korea.
The two Koreas remain technically at war because only a truce was signed at the end of their 1950-53 conflict, not a peace treaty.
More than 1.8 million troops are deployed on the peninsula, making it one of the world's most heavily armed hotspots.