The source document for the answer is ICAO Document 8168, Procedures for Air Navigation Services - Aircraft Operations. (known as PANS-OPS).
If you have access to Jeppesen or Aerad flight guides, you will find the ICAO 8168 hold entry and timing requirements copied in them. I'm not sure where you will find it in military documents, but it just may be in the pocket-size regional flight guides.
Sorry not to have the full answer - but I might have got you pointing in the right direction.