Sorry have to disagree my active duty was in Yoko- Japan. Even shipboard in peacetime with experienced personnel it is nearly impossible to get them running on their own efficiently in less then 3 months. Then they tend to get lax once they are 1-2 months from rotation. There are all sorts of little things that cannot be taught stateside for the cultures that are being dealt with. They need to be boots on ground more than 6 months. The one year tour is about the minimum that suffices for this.
Slick nearly ruined us with the 2 year enlistments. Recruits came out of boot and maybe A school, onboard about 6 months and then rotating stateside for new orders/re-enlistment or processing out.