I have a military-related question. In Lois McMaster Bujold's Memory, we discover that officers can be promoted to one rank higher than their original one when they retire; Emperor Gregor promotes Miles to captain when he (Miles) retires, even though he was only a lieutenant. Unfortunately, my knowledge of the US military is *cough* not quite as extensive as my knowledge of Bujold's military. My army brat father has informed me that officers in real world militaries are sometimes promoted right before they retire, but even after Googling things like "military promotions retirement," I have no idea if the US army does this, let alone under what circumstances they might do it. Does anyone have any idea?