yes i have read the first and was captured by it, and then i readed all of them, they're really good novels imho with a lot of historical accuracy, McCullough make a wonderful work with his characters.
Another really good historical novel i raccomend (don't know if it has already been mentioned here, this topic is too big) is Alexandros, by Valerio Massimo Manfredi, a trilogy about the life of Alexander.
Also by the same author, the Tyrant, about Dionisus of Siracusa, and the Shield of Thalos, a really beautiful novel settled in Sparta during the Persian invasion.