[Illustration pos32:
This is what we have
This is what we want]
At the command march, the front rank twice executes Squad right, initiating (starting) the second Squad right when No. 4 has arrived on the line. That much is very simple.
The rear rank has a harder task. Let us have the front and rear rank execute the movement separately:
The rear rank is to take its place on the dotted line a b.
No. 3 rear rank moves straight to the front until in prolongation of the line to be occupied by the rear rank.
No. 2 follows No. 3.
No. 1 follows No. 2.