Conversation so far:
how many generals does the us military have
The U.S. Army has 315 General Officers.
how are generals nominated in the US
Generals are nominated for the appointment by the President with the advice of the Secretary of Defense, service secretary, and if applicable the Joint Chiefs of Staff
what is a general's standard tour in the US
The standard tour for most general positions is three years, bundled as a two-year term plus a one year extension

Question: at what age must the officers retire
Self-contained rewrite: at what age must generals retire in the US