Excerpts from Books and Wikipedia
Crassus, the richest man in Rome and controller of politics along with Julius Caesar and Pompey, led the army of 50,000 to achieve military glory. The Romans were mainly foot soldiers while the Parthians were predominantly cavalry. About 20,000 Romans were killed and 10,000 captured. Crassus was killed in the battle. [Furtado: 1001 Days]