It‘s one of those issues that‘s difficult to explain to someone that hasn‘t experienced it. And, unfortunately, the Hollywood stereotypres don‘t help one bit.
Consider this brief comparison (it doesn‘t cover every possibility):
You can be an 18 year old private soldier responsible for yourself and your own weapon, expected to be where you‘ve been told to be at the directed tinmings. Most activities will be surpervised by your Section Commander or 2IC and you will seldom be given tasks on your own until you have had an opportunity to prove you can be given such tasks. Your future will be many years of service in the battalion as you increase in rank and experience, but you will always be commanded by the officers of the battalion.
Or you might be a 22 year old (after 4 year university) platoon commander. You will be responsible for the training, welfare and activities of 30 (+/-) soldiers. Some of these soldiers will have infantry training and leadership experience that outweigh your own significantly, but they and you understand that the decisions in the platoon are yours and that you will be held responsible for them. Your future will be alternating tours of duty in and out of the battalion; tours away from the Regiment may be instructional, staff or other types of employment. Tours returning to the battalion will see you in increasing apppintments of responsibility and command over larger numbers of troops.
Another view from my notes:
The young officer brings to the table vigour, freshness, newness, an understanding of the latest interpretation of tactics and leadership as imposed by his/her training, and, ultimately, the vested authority and responsibility which places him/her in charge reinforced by an aggressive need to assert authority because that is what their training experience has expected of them. The Senior NCO brings years of training, experience, knowledge (especially of the unit, resources and soldiers) and, hopefully, maturity and unlimited patience with each new junior officer. The challenge for both is understanding how to balance these contributions for greater effect, the sum is much greater than the whole when both work together, and much less when they don't.
Mike