Final answer:
Historically, mental trauma suffered by war veterans was not considered in their defense due to the lack of understanding and societal views on mental health. However, perspectives have changed, and now the impact of mental trauma is recognized and factored into the defense of veterans.
Step-by-step explanation:
In the past, mental trauma suffered by war veterans was not factored into their defense because there was little understanding or sympathy for psychological problems. Instead, soldiers who were diagnosed with psychological issues were often seen as weak or insane, resulting in their disqualification from receiving disability pensions.
However, over time, societal perspectives on mental health have evolved, and now the impact of mental trauma on veterans is recognized and taken into consideration in their defense. Veterans are now provided with various resources and support to help them cope with the psychological effects of war.