Section 78
SEC. 78. On completion of his training instruction the trainee shall pass into the First Reserve where he shall be assigned to an organization. He shall continue to serve in tile First Reserve until he shall reach thirty years of age. On January first of the year in which he shall become thirty-one years of age, he shall be transferred to the Second Reserve where he shall be assigned to an organization in that echelon. He shall serve in the Second Reserve until he shall become forty years of age. On January first of the year in which he shall become forty-one years of age, he shall be transferred to the Third Reserve in which he may be assigned to an organization. He shall serve in the Second Reserve until he shall be fifty years of age.