A. Roman Legionary Soldiers
     There were the pedites (infantry) who formed the backbone of the roman Army.This group 
     consisted of Roman citizens between the ages of seventeen and forty-six,most of whom 
     volunteered to serve for twenty years as professional soldiers. Infantry units were 
     organized as follows:

1.Legio (legion), the largets unit, often compared to a divison or brigade in the United 
         States Army. Originally consisting of 6000 men, the legion in Ceasar's army averaged 3600
         men, divided into ten cohorts. In the Gallic War Caesar had as many as ten legions. His 
         favorite one was the Tenth (Decima), commanded by Labienus.

2.Cohors (cohort), a thenth of a legion, or 360 men, divided into three maniples. A cohort 
         is roughly the equivalent of a battalion in the United States Army.    

3.Manipulus (maniple),a third of a cohort, or 120 men, divided into two centuries.

4.Centuria(centiria) , the smallest unit. It consisted of 60 men, or one-half of a manilpe.
         As the name implies, it originally had 100 men.

B.Auxilia (Auxiliary Troops)
    Pedites (infantry troops). These were soliders drwan from allied and subject peoples, or 
    hired as mercanries from independant nations. They included:
   
1.Levis armaturea pedited (light-armed foot soilders), mostly from Gaul and Germany.
   
2.Funditores (slingers), from the Balearic Islands.
 
3.Sagittarii (bowmen or archers), fron Crete and Numidia.
   
   Equites (cavalry). A contingent of cavalry generally accompanied each legion. These horsemen
   were noncitizens from Gaul, Spain, and Germany who served for pay. Caeser used about four or 
   five thousand cavalry in the Gallic War for purposes of scouting, starting battle, and 
   pursuing the enemy, as well as for susprise attacks. The cavalry was organized as follows:

1. Ala, a squad of about 300 men.
 
2. Turma, a squad of about 30 men, or one tenth of an ala.

3. Decuria, a squad of ten men , or one-third of a turma.

C. Noncombatants
   1. Calones, slaves who performed menial tasks for the camp and the officers.
  
 2. Mercatores, traders who conducted canteen outside camp, selling the soliders extra provisions
    and buying booty from them.
  
 3. Muliones, muleteers who took care of the pack animals and the heavy baggage.
  
 4. Fabri, engineers or mechanics who were employed to construct bridges, ships, engins of war, 
    ect.
  
 5. Exploratores (scouts) and speculatores (spies) whp were sent ahead of an army on the march 
    to reconniter and secure informantion about the enemy and the terrain. They were usually 
    mounted.