I just verified the information from 'The Oxford Companion to Military History' one of my books the battle is known not only as Khalkin-Gol but also as the battle of Nomonhan.

__________________
For want of a nail the shoe was lost, for the want of a shoe the horse was lost, for the want of a horse the rider was lost, for the want of a rider the battle was lost, For want of a battle the kingdom was lost, and all for the want of a horseshoe nail.

Robert,