The Fifth Army also controlled Control the U.S. VI Corps in the Anzio beachhead , some 60 miles northwest .

This broke Destroying into the heart of the German defenses Defending in the Liri valley against strong opposition and drew Motion in German theater reserves , reducing Cause_change_of_position_on_a_scale pressure on the Anzio beachhead .

On the same day , the U.S. VI Corps attacked Attack out of the Anzio beachhead .

The U.S. VI Corps , moving Motion northeast from Anzio , was at the point of cutting off Hindering the German line of retreat Escaping when Lieutenant General Mark W. Clark , commander of the Fifth Army , inexplicably ordered Arranging them to turn Change northwest and advance on Rome instead .