How to format the memo, who signs where — every branch has a style bible. The Air Force's Tongue and Quill is the famous one.
| Branch | Controlling publication |
|---|---|
| Army | AR 25-50 — PREPARING AND MANAGING CORRESPONDENCE Current dated 2020-10-10 |
| Navy | SECNAV M-5216.5 CH-1 — Department of the Navy Correspondence Manual Current dated 2018-05-16 Department of the Navy Correspondence Manual |
| Marine Corps | SECNAV M-5216.5 — on MCPEL (not in our index) Shared DON correspondence manual |
| Air Force | AFH 33-337 — The Tongue And Quill Current dated 2016-07-27 The Tongue and Quill |