What changed the roman army was result of the civil wars of the roman republic?

The civil wars of the Roman Republic resulted in significant changes to the Roman army, primarily through the shift from a citizen-soldier model to a professional standing army. Generals like Julius Caesar and Pompey began recruiting soldiers from the lower classes, offering them land and pay, which created loyalty to the general rather than the state. This shift undermined traditional Roman republican values and led to the army being used as a political tool in power struggles, ultimately paving the way for the rise of imperial rule. The transition marked the end of the Republic and the beginning of a more militarized state.