It can be argued that the empire built by the Romans was the largest in the history of the world. The Roman Empire controlled the largest land area in European history and influenced a vast region, serving as a cultural center for the entire European continent. Their strength came from their skill and prowess on the battlefield. The Roman army was extremely effective and became the basis of our military structure today by using technological advances in strategy and armaments and simply having more discipline. During their time, the strategy employed by the Romans was second to none. The success of their strategy began with the Romans separating their armies into smaller, more specific types. They used many different types of infantry over the years, but the main types they used were the veliti, the hastati, the princes, the triarii and later the famous legionaries were introduced (Roman Empire Wars). This infantry worked together on the battlefield to effectively eliminate the enemy and win the battle. The Velites were considered the entry class into the army and were consequently the first used in battle. This infantry was often made up of the poorest soldiers, who were given only a small shield, cheap leather armor and five javelins, which they had to buy themselves. When enemies approached, they stood at the forefront of their army and quickly threw their pilums (throwing spears) to render enemy shields useless (Roman Empire Wars). The hastati were used as a second wave of infantry and consisted of wealthier individuals than the velites. Because they could afford better quality weapons, they used a bronze helmet, a scutum (large rectangular shield), the famous short sword gladius and two pilums. They... in the center of the paper... the military capabilities of ancient armies." Google Books. Greenwood Press, 1991. Web. May 29, 2011. .Gray, David. "Ancient World." Associated Content. Associated Content, 16 October 2008. Web. May 29, 2011. “Marius Reforms the Legions.” UNRV History, May 14, 2006. Web. May 28, 2011. “Roman Empire Wars.” Rosenstein, Nathan. farms, families and death in the Middle Republic.." Google Books, The University of North Carolina Press, 2004. Web 2011..