The 3D method is used to quickly and accurately communicate to the rest of the unit where something we have spotted is and what it is. It is important to remember that this will not be a good method of communication if we are relaying information to an element far from our position.

1. Direction – direction of the contact. Use and azimuth or a geographical direction (North, South etc.). This is the preferred and more accurate way of calling out direction.Additionally is some situations calling out a general direction (left, front etc.) can also be useful but usually only on close ranges and in a vehicle or an organized formation. For example if the point man in a line formation calls out “contact right” it should be obvious he means the relative right of the formation.
2. Distance – estimated distance to the contact calculated using a preferred method (e.g. crack-bang method).
3. Description – a short description of the contact and it’s position. Include answers to questions like: Is the contact moving? Is the contact a vehicle or infantry or a single man? Is the contact hostile? (important if we expect civilian presence in the AO). Add only information that will help to locate and appropriately react to the contact.