When war occurred the citizens were called to the Field Of Mars. The original legion had 4200 soldiers divided into four experienced levels. They had hard training exercises. The discipline was very harsh. If there were any signs of a rebellion they would line the soldiers up, one by one and every 10th man they would kill. Being a Roman soldier wasn’t easy. They had hard training. Soldiers had to buy their own gear and carry it with them to camp. 

The soldier’s javelin had a pointy part on one end, there was a weight on the other end to make it easier to throw. The pointy end was so sharp and fine that after it was thrown that way the enemy couldn’t pick it up and reuse it.