Depending on the kind of trainer you are close combat, long range, exc will depend on your job.
Close quarters: You will teach youngsters how to fight at close range combat if the need comes to show such as they have no ammo or weapon besides their sword and shield.
Long Range: Will teach youngsters how to use weaponry like guns and cannons.
Vehicle trainer: A trainer who teaches youngsters how to properly control large scale vehicles, small scale vehicles, aircraft, and sea craft.
Cook trainer: Will teach youngsters how to cook on there own so in the wild they will know what they will need and how to cook it.
Survival trainer: A trainer which shows the kids how to find special herbs, food, pure water and other essential items needed for existence to stay with them.