Final answer:
The type of discharge for a disability incurred in the line of duty is generally an Honorable discharge. The blue discharge, which was neither honorable nor dishonorable, was historically used against gay and lesbian service members and had negative ramifications, but was replaced by an undesirable discharge category in 1947.
Step-by-step explanation:
The type of discharge due to a disability incurred in the line of duty is typically an Honorable discharge. When service members are discharged because of a disability that occurred in the line of duty, they typically receive honorable conditions, signifying that they served faithfully and well. However, historically, there have been different types of discharges that were issued for other reasons, such as the blue discharge, which was used against gay and lesbian service members after World War II. The blue discharge was neither honorable nor dishonorable, but it had negative consequences, such as disqualification from receiving benefits and discrimination in future employment. By 1947, the Veterans Administration discontinued blue discharges, replacing them with an undesirable discharge category, which continued to discriminate against gay and lesbian service members.