There are a lot of forgotten realms novels out there but Ironhelm offers something different. Rather than the usual European style setting we get an Aztec inspired setting complete with plumed serpent gods, human sacrifice and obsidian armed warriors.
The story parallels the real life story of south America with explorers finding Maztica and dominating the natives with steel weaponry and a priest keen to convert the natives to the 'right' God. Of course being the forgotten realms magic, elves and dwarves play a part and distance this novel from the real story but nonetheless as a primer on the history of the Spanish conquest, it's not too bad (just don't use it in any history essays!)
All in all an enjoyable and exciting start to a good trilogy and a welcome break from traditional fantasy setting. It's a shame that more authors don't take advantage of the pre-Cortez south American setting as a setting for fantasy novels - this trilogy plus Aliette De Bodard's Obsidian and Blood trilogy demonstrate how good it can be.