Engaging in private sexual activities in such a profoundly inappropriate and tragic context could potentially indicate one of the following psychological conditions or behavioral issues.

Antisocial Personality Disorder (ASPD): Individuals with ASPD may exhibit a disregard for social norms, empathy, or the feelings of others. This could include engaging in behavior that is deeply inappropriate or shocking in such a setting.

Paraphilic Disorders: If the individual derives sexual gratification from settings or contexts involving destruction, death, or suffering, this could point to a paraphilic disorder such as necrophilia (extreme cases) or other unconventional sexual interests. Such conditions are rare but possible.

Psychopathy (a subset of ASPD): Psychopathy is characterized by a lack of empathy, guilt, or remorse, and individuals may engage in behavior that seems detached or even exploitative, particularly in contexts of destruction or tragedy.

Acute Stress Reaction or PTSD: While this behavior would not directly result from post-traumatic stress disorder (PTSD), some individuals exposed to extreme trauma may develop hypersexuality or engage in risky or inappropriate behaviors as a maladaptive coping mechanism. This could also be part of dissociation, where someone becomes detached from the emotional weight of the situation.

Mania (from Bipolar Disorder or Another Cause): A manic episode can lead to impulsive, reckless, or socially inappropriate behaviors, including hypersexuality, without consideration of the context or consequences.

Moral Disengagement: This may not align with a clinical mental disorder but could reflect moral disengagement due to prolonged exposure to war or violence. Soldiers or others in conflict zones might become desensitized to suffering and behave in ways that appear callous or inappropriate as a coping mechanism or due to a breakdown of normal ethical boundaries.