Resources Documents, Manuals and helpers, All free to download and keep forever. ATP 3-21.8The Infantryman’s bible FM 21-75 Appendix 1Older document that covers range cards in depth Range CardA blank range card, also known as DA 5517 TM 11-5820-890-10-6Covers radio usage FM 6-02.72More practical guide on radio usage GTA 07-71-001Super useful aid. Contains all sorts of good stuff you will actually do in Advance Camp TC 3-21.5The D&C (Drill and Ceremony) Bible