Across the armed forces, the minimum age allowed for enlistment is 17 (with parental consent) and 18 (without parental consent). The maximum age for enlistment for someone who has never served in the military before varies by branch; for the Army it's 35, for the Navy it's 34, for the Air Force it's 39 and for the Marines it's 28.
The year of the horse means there is leadership associated with this sign this year, so your authority may increase, according to Ng. However, the impulsive behaviour of the horse can lead to recklessness, so stay away from gambling and speculations.
How does the age of a horse compare to the age of a human being? A horse year is equal to 6 1/2 human years for the first 3 years of the horse's life. At the horse age of three the equivalent changes and is approximately 5 years to man. From 4 the horse year equivalency changes to 2 1/2 years. If your horse lives to be 36 horse years the human equivalency in years would be 100 1/2 years!