Sometimes known as "fork and knife school". I can't speak specifically for the Army, but a particular personal incident comes to mind.
When I attended AFROTC field training at Maxwell AFB, in a lot of ways it was a fairly typical boot camp experience, with roaming enlisted training instructors ready to very promptly and firmly correct any deviations from standard in a memorably expedient fashion (much less swearing than Full Metal Jacket, as it's the Air Force). One day during this fine summer camp I found myself on the receiving end of one such chewing out from a TI, for walking around the wrong side of a table in the dining facility.
It was in the midst of this comically scathing tirade (something about him threatening to crawl up my nose and living in my nightmares if I dared try it again) that this Technical Sergeant abruptly stopped, wheeled around and was about to tear into another hapless cadet that took the same detour I did. But instead, without a whit of the seething rage he was pouring out just a second before, he calmly patiently explained to this trainee that she was to take a different route, punctuating the instructions with a "right over there, ma'am". It was at that moment that I noticed that she did not have cadet insignia on her lapels, but captain's bars. It turns out she was a proper M.D., fresh from med school, directly commissioned and immediately outranking the sergeant that was giving me the what-for and her polite guidance.
So by Direct Commissioning, it is indeed direct.
The other was a Navy doctor. An officer, but really because he was a doctor.
Their experiences were wildly different. Not so much about risk but the Marine was a grunt and his description oozed what it meant to be at that level of rank. The doctor ... his description was that doctors, while they had rank, were largely left alone to their own devices to do what they needed to do. Rank wasn't really relevant to their daily lives.
My grandfather landed at Tarawa. He only talked about privately, it to family members that were in the service.
> The doctor ... his description was that doctors, while they had rank, were largely left alone to their own devices to do what they needed to do. Rank wasn't really relevant to their daily lives.
From my experience, military doctors tend to be doctors that happen to wear a uniform. They already have the skills actually needed by the service (unlike most military jobs, where it's assumed that you know little to nothing of the job), the direct commissioning training is mostly so they can function and fit in that environment.
Sure, most of them join either during med school or during residency, with Uncle Sam picking up the financial obligations.
Funny story - good friend was an army doc and we managed to both get time off at the same time/location. Hanging out along the ocean and come across a little kid that got hurt. So he goes into doctor mode and talks soothingly to the kid, who is very apprehensive. He says “I know you’re not so sure I’m a doctor. It’s because I haven’t asked your parents for their insurance info yet” and smiles at the mom and dad.
Later on he says that never dealing with insurance is one of the perks of being a doctor in the military.