The corps commander - usually a lieutenant-general - has his own headquarters and communications system but with the fighting formations - the divisions - only on loan to him.

From 1932, he became the army corps commander of the 32ed army corps.

The division commander considered the battlefield as far as 70 km out, while the corps commander had a field of view out to 150 km.

The expansion of the army saw some officers promoted from brigade to corps commander in less than a year.

In case of danger, each corps commander should change this order of march, by having his advance and rear brigades unencumbered by wheels.