How much did Rome pay the soldiers serving in the legions and the auxilia, who expanded and defended her empire? The answer is of some significance not only to the history of the Roman army but to the political, social, and economic history of the Roman Empire in general. Many a learned article has therefore been devoted to this matter and steady progress has been made. Yet problems remain, the evidence being scanty and often not readily intelligible. Work on the 600 and more writing-tablets from the legionary fortress of Vindonissa (Switzerland), currently in progress, has turned up a missing link in the chain of evidence. The new text, a pay receipt of an auxiliary soldier, reveals a new sum and thus allows the reconstruction of the Roman army's pay scales through the first three centuries A.D. The overall pay model given below reconciles all the hitherto known evidence.