With the third section of the column deploying into line behind the second line, the legion is now in three lines (acies triplex).
Notice that last two lines are one stands deep. The front line is called a reenforced line. Typically this kind of deployment would be used when there were no know enemy
in the area. The legion is now ready for battle. The legion was extremely flexible. Each line represents a number of cohorts. Four in the front and three in each succeeding line.