Maybe not with a fourteen year old but this same situation of a young soldier with a young wife being separated by a tour to South Korea causing marrital problems is not uncommon:
A western Pennsylvania Army wife will spend six months to two years in jail for having sex with a 14-year-old boy last year.
Mercer County prosecutors learned about the tryst from Ashley Moore’s husband, Army Pfc. Tucker Moore. He sent an e-mail to authorities that he received overseas from his wife last year, confessing the affair.
The soldier defended his now 20-year-old wife at her sentencing Wednesday, saying the Grove City couple married two years ago but spent only a couple of months together before he shipped out. He was in South Korea when he got the e-mail last year.
Ashley Moore told the judge she cheated on her husband after she discovered he was having an affair overseas.
The judge reminded the Moores that the 14-year-old was the victim in the case. [Army Times]
If it is true that the soldier was cheating on his wife he to could get prosecuted by the military justice system because adultery is illgal in the US military. However, it is often tough to prove.