Why hospital ships and troopships disappear from naval history

How overlooked are hospital ships and troopships in naval history?

They are usually treated as background infrastructure and become prominent mainly when something goes badly wrong.

Hospital ships and troopships resemble other workmanlike vessels that enter popular history mainly when disaster strikes. A hospital ship becomes visible when it is torpedoed, while a troopship is often treated as an anonymous transport rather than a strategic asset. That narrative bias hides the organization, capacity, and risk behind moving casualties and armies by sea. Essential support vessels can shape a campaign without generating a conventional battle story.