It does make sense though. Aries is the GOD OF WAR to the Greeks (interchangable with Mars for the ROmans as the same name), and he may be bringing a Trojan Horse to the battlegound today.
Though, Aries is also the constellation between Taurus and Pices (bull, and 2fish) And in his constellation form, Aries is a ram. The constellation of Aries is regarded as the first sign of Astrology. Astrology - that is to say the recorded symbology of the constellations- first came about around 2,000 years ago. The sun sets and rises at a point on the horizon, and when Astrology was concieved of, the sun rose (or set, I can't recall) right in front of the constellation of Aries on the horizon.
So Aries was viewed as the "first" constellation.