The United States and South Korea kicked off their largest-ever joint military logistics field exercise this week, the allies said Wednesday. In this July 9 photo, U.S. Marines drive an Oshkosh Logistics Vehicle System Replacement onto shore at Dogu Beach, Pohang. Photo by Lance Cpl. Matthew Borruso/U.S. Marine Corps

SEOUL, July 15 (UPI) -- The United States and South Korea kicked off their largest-ever joint military logistics field exercise this week, the allies said Wednesday, involving more than 4,400 troops and 600 pieces of equipment as tensions remain elevated on the Korean Peninsula.

The 2026 Combined Joint Sustainment Training, a biennial field exercise organized by the Korea-U.S. Combined Forces Command, began Monday in and around the southeastern coastal city of Pohang and the northern county of Hongcheon. It will run through Thursday.

The exercise involves more than 2,400 South Korean soldiers and 2,000 U.S. soldiers along with assets including naval vessels and aircraft, CFC said.

"Sustainment is essential to victory in war," Maj. Gen. Park Jin-won, CFC's assistant chief of staff for logistics, said in a statement. "Through this year's ROK-U.S. Combined Joint Sustainment Training, we maximized our full-domain sustainment capabilities across land, sea and air."