Thanks for the replies guys.
Tyron, I am more into the facts, but I know there are large parts of the history of the empire (and Caesars life) that are not documented. So sometimes it is good to add a little educated guesses.
Centaurion, that other book you are not sure the name of, sounds like the one I am reading (though, the one I am reading is from a historian who researched Caesars military conquests for 30 years, so as to mix the writings of several classical writers such as Caesar himself, Plutarch, Appian, Suetonius, Tacitus, Cassius Dio, Josephus, Polybius and a few others in an attempt not to get a bias view (as most of the writters of the day were very bias, foremost, Caesar himself). But like the one you mentioned, it explaines the military campaigns in detail.
The books by Colleen McCullough sound interesting, I might have a look for them and have a quick skim through to see if I like the writing style. Do you know of any book that details quickly the history of the Roman empire? So far I have only been able to find a 2 hour video documentary on this topic (its called "ROME: Engineering an empire"), but it focuses more on the engineering feats of the Romans, than on the actual history (critical battles, rise, and reasons for the eventual downfall of the empire etc).
