Gaugamela. 331 BC: in a virtual Gaugamela - present day northern Iraq - a team of childhood friends from London and Sheffield take command of the Macedonian forces of Alexander the Great as they try to conquer a vast army from the Persian Empire. But will close-knit ties prove a hindrance? Series producer Ludo Graham : Executive producers Adam Macdonald and Cassian Harrison (S) Postponed from last Monday BBCi: digital satellite viewers can access interactive features via the handset