These two actually got off light in the Korean court system by not having to go to jail. However, they are probably being chaptered out of the Army with a possible bad conduct discharge:
Two American soldiers have been given suspended prison terms for smuggling cannabis into South Korea from the United States, a court said Monday.
One of the soldiers was sentenced to 2 1/2 years in prison, suspended for 3 years, for hiding two cannabis cartridges in his baggage and flying to Incheon International Airport from Atlanta in April, the Suwon District Court said.
The other soldier received the same sentence for purchasing four cannabis cartridges and other cannabis products from an overseas website and attempting to smuggle them through an international flight in March.
The soldier was found to have again placed the same order for the drugs the following month after his first attempt was caught by customs authorities here.
Yonhap
You can read more at the link, but how much of a pothead are you that you get caught once and yet you try to order your marijuana again?