Look back on the first Star Crusades trilogy

With Call to Arms due for release in a couple of weeks it is time to re-look at the first events of the Star Crusades series. The first trilogy concentrated on the training of Spartan, his first meeting with Teresa Morato and their foray into the Great Uprising. Here's a recap of the first three books:

Siege of Titan was the first book in the series and consists almost entirely with Spartan's training. The book culminates on the bloody Siege of Titan.

Tears of Kerberos continued the story on to other worlds, specifically the odd world of Kerberos, in the same star system as Prime (Proxima Centauri). We learn of the growing insurgency and the rise of a number of cults and underground movements. At the same time Spartan fights his first major battle on the surface of a planet at the massive battle of New Carlos.

Fires of Prometheus rounds out the first trilogy of books as the fighting appears to calm down. Spartan and General Rivers have vanished though and what is discovered on Prometheus will change the course of the Uprising and Spartan's life forever. It is here where we are first introduced to one of the series more enduring characters...Gun.

Have you read the first three books? Which was your favourite part?