육군을 원하는 건지 모르지만, Army, Navy, Air Force 에 따라
직책마다 recruiting조건이 다르니까 각각 홈피에 가서 서치해보세요.

안녕하세요,

아래를 함 보세요

Active Duty None-Prior Service (현역)
Army - 35 (must ship to basic training prior to 35th birthday. The Army experimented with raising the age limit to age 42 for a brief period of time, but effective April 1st, 2011, the Army has reverted to the lower age limit.
Air Force - 27
Navy - 34
Marines - 28
Coast Guard - Age 27. Note: up to age 32 for those selected to attend A-school directly upon enlistment (this is mostly for prior service).

Reserve Non-Prior Service (예비군)
Army Reserves - 35 (must ship to basic training prior to 35th birthday)
Army National Guard - 35 (changed from 42 in 2009)
Air Force Reserve - 34
Air National Guard - 40 (Changed from 34 in Aug 2009)
Naval Reserves - 39
Marine Corps Reserve - 29
Coast Guard Reserves - Age 39

간호사라서 어쩜 육군에서 나이 waiver를 줄수도 있을껍니다
모병오피스가셔서 한번 알아보세요

육군은 원래 연령 제한이 만 31 이었다가 - 41세 - 다시 35세로 바뀌었습니다. 만으로 34세 에 입대하셔야 하구요, 최소 35세가 되는 생일 전까지 입소 완료해야 합니다. 간호장교 모병은 일반 사병과 달리 엘에이에 따로 모병소가 있습니다, 일단 아무 모병소나 전화하셔서 연락처를 알아보시고 문의해 보세요.

Emergency Room Nurse (66HM5)
Requirements include:

Bachelor's or Master's degree in nursing from a program accredited by the National League for Nursing or the Commission on Collegiate Nursing Education, or accepted by the U.S. Secretary of Education
Completion of a qualified course in emergency room nursing or one year of supervised emergency room experience
Between 21 and 42 years of age (may request a waiver)
Current, valid and unrestricted nursing license
U.S. citizenship
더 많은 사항은 여기로 가시면 보실수있습니다.
http://www.goarmy.com/careers-and-jobs/amedd-categories/nurse-corps-jobs/emergency-room-nurse.html