Here's a breakdown:
* Service Academies (West Point, Annapolis, Air Force Academy): These are four-year undergraduate programs leading to a bachelor's degree and a commission as an officer.
* Officer Candidate Schools (OCS): These vary in length depending on the branch of service and the prior experience of the candidate. They can range from a few weeks to several months.
* Other Military Schools (e.g., specialized training schools): The duration of these schools depends entirely on the specific training provided. Some are short courses, while others may last for several months or even years.
To get a precise answer, you need to specify which military school (e.g., West Point, Navy OCS, Air Force technical training school) you're interested in.