How it works

Learn. Simulate. Plan. Walk.

The same loop a good instructor runs on a land nav course, without needing the course.

PHASE 1Learn

Short lessons in teaching order, taught to TC 3-25.26. Illustrations show map crops beside terrain, after the answer.

PHASE 2Simulate

Stand on the ground in Gridland, a 3D training world. Plot your point on the map, then find it on the ground.

PHASE 3Plan

Create a problem on a real map. Get your objective grids, plot them, and plan each leg. Your plan is scored leg by leg.

PHASE 4Walk

Take the problem outside and walk it with the GPS walk.

Then you go back to the lesson the score points to. That is the loop.

Phase 1

Learn the skill in the order it is taught

Lessons start with the map sheet and its marginal information and end with what to do when you are lost. Each one is short enough to finish between other things.

Every lesson has training-poster illustrations: a topographic map crop paired with a photo of the same kind of ground. The picture appears after you answer, so it teaches instead of giving the answer away.

Reading an 8-digit grid coordinate One 1,000-meter grid square between easting lines 12 and 13 and northing lines 56 and 57, divided into tenths. A point sits 3.4 tenths right and 7.8 tenths up, which reads as 1234 5678. 12 13 56 57 RIGHT 3.4 TENTHS, THEN UP 7.8 4-DIGIT12 56 6-DIGIT · 100 m123 567 8-DIGIT · 10 m1234 5678 READ RIGHT, THEN UP. DO NOT ROUND.
Illustration. One 1,000-meter grid square divided into tenths.

Phase 2

Practice in the simulator

The simulator gives you a first-person view of Gridland next to its map sheet. Plot your point, then find it on the ground.

Phases 3 and 4

Then put it on the ground

Create a problem on a real map. Pick a start point, box your area, and get your objective grids. Plot each one and check it, then plan every leg: dead reckoning, handrails, terrain association, attack points, and backstops.

Your plan is scored leg by leg, with the reason for every check in plain English. Then walk it with the GPS walk.

A route plan on the free Clarksville, Tennessee map with handrail and dead reckoning legs

Start the loop

Subscribe on the web and unlock the app.

See plans