It's not exactly a direct route, it just can help out. What it is is another path to get a Nomination to the Academy, which is helpful. On top of the extra path to a nomination, being in the service helps to set yourself apart from others. None of that matters if your Whole Candidate Score is still poor though, so you still need to strive academically and as a leader, and make sure you still get a good SA
I disagree as there is a direct route for soldiers, both active, reserves, and NG. The service connected nomination, specifically soldier nomination means, they only compete against each other and they will be considered for the prep school. The prep school is about third recruits athletes, third soldiers, and third diversity candidates. If you looked at the minimum recommended scores for soldiers on the admissions website, a lot lower than the average accepted candidate scores. Of course, to get the soldier nomination, need to get your commander endorsement.