Removing code duplication in inheritance?

I have wrote the following code:

std::shared_ptr<mtm::Character>
Game::makeCharacter(CharacterType type, Team team, units_t health, units_t ammo, units_t range, units_t power) {
    if (health <= 0 || ammo < 0 || range < 0 || power < 0)
    {
        throw mtm::IllegalArgument();
    }
    std::shared_ptr<Character> out = nullptr;
    if (type == SOLDIER)
    {
        out = std::shared_ptr<Character>(new mtm::Soldier(team, health, ammo, range, power));
    }
    if (type == MEDIC)
    {
        out = std::shared_ptr<Character>(new mtm::Medic(team, health, ammo, range, power));
    }
    if (type == SNIPER)
    {
        out = std::shared_ptr<Character>(new mtm::Sniper(team, health, ammo, range, power));
    }
    return out;
}

As you can see I have some kind of code duplication, what if there are 100 types... I would have to write 100 if statements which doesn't sound the perfect way to do it.

Any suggestions?