What are some examples of roman imperial military power

There are lots of examples of the Roman imperial military power, some of which are:

- The battle with the Gauls; the Romans managed to exhibit great tactical knowledge and skills in the battle with the Gauls. They managed to push them exactly where they wanted them, built two walls around them and trapped them, and used their formations very cleverly in every situation by changing tactics as the circumstances required.  

- The wars with Macedonia; this three wars were a nice example as to how the Roman military was evolving, learning, and developing with every single battle. In each of the wars a different tactic and formations were used, and the Romans managed to develop few new ones as well as to make their weaknesses another strong asset, and they managed with the final defeat on the Macedonians when they again managed to use the terrain in their advantage and place the Macedonian army exactly were they wanted so that they are weakened in defense while the Romans were in great attacking advantage.