precipitation in Culture. In meteorology, the fall of water, ice, or snow deposited on the surface of the Earth from the atmosphere. In chemistry, a chemical reaction in a solution in which a solid material is formed and subsequently falls, as a precipitate, to the bottom of the container.
In the United States Army, Army Reserves, and Army National Guard, the maximum age allowed to enlist and ship to basic training is 35 years old. The Army experimented for quite some time allowing anyone up to the age of 42 years old to enlist and complete basic training.
But maybe you can use knowledge you have to help the military men by being a teacher there is always a way to be involved try that option with the army branch. source: Is it possible to join the army if you are 50 years old? what does a person have to do in order to get into the army?