Could a man who was in the army contracted something that would makke him infertile? and could that cause any woman he is with to have fertilty proble

Infertility : Infertility is caused due to lowered sperm counts of men in about 40 percent of couples apart from numerous physical causes such as hypogonadism enviormental factors such as stress radiation exposure chemicals such as fungicide can lower sperm counts the enviormental factors affect the couple but donot transmit medicines used to treat depression commonly used in veterans can also affect sperm coun.

STD?: Are you asking about sexually transmitted diseases (std). An std can be contracted whether a civilian or in the military.