The    army on the march comprisd of three sections:
   1.primum agmen, vanguard, consisting of scouts, cavalry squads, and light-armed    infantrymen.

   2.agmen, the main column of legionary troops.

   3.novissimum agmen, the rear guard, consisting of at least experienced legionaries.
   
   The impedimenta (hevay luggage) usually followed each legion. It was carried    
on pack animals(horses and mules) or in wagons, and consisted of extra weapons,    
food, clothing, artillery, tools, tents, etc.

    The sarcina(personal pack of a soldier) was carried over the left shoulder ina 
   bundle tied to a forked pole. It contained clothing, cooking utensils, rations,    
tools, rampart stakes, and other personal equpitment. When carring his sarcina,    
the soldier was referred to as inpeditus(encumbered); without his pack, he was   
 expeditus(unencumbered).
   
   An average day's march(iter), form sunrise to noon, covered about 15 miles.  
  An inter magnum (forced march) covered approximatley 25 miles.