Neither column, however, was sufficiently concentrated on this evening to undertake occupation of the city. German infantry divisions were reported to be 70 miles in rear of their armored corps.
So even with innovative use of armor you still need infantry to consolidate your gains.
Very true. This action by the 10th Army was the first seperation of a Panzer corps from the infantry for use as a spearhead (very blitzkriegesque). But in the end the infantry does need to occupy gains.
As we will see in May the 1st Panzer Division along with the other Panzer divisions used as spearheads compensated for the need to occupy gains by motorizing infantry to keep up with the spearhead (including motorcycle infantry). Though if I remember correctly they did use the 10th Panzer as the sole protector of the Sedan bridgehead for a short period of time (I'll have to double check that).