The Ram’s horns are the symbol for Aries. According to astrological theory, Aries rules the head and face of the body. This glyph symbolizes their potential to meet life’s challenges head on with assertiveness.
The symbol is a sword/spear (the arrow) and the shield (the circle), which is universally recognized as the symbol for males. The circle represents will/drive/aim/force (arrow) over divine spirit (circle).
In Astrolosophy, Aries is ruled by the planet named after the Roman “god of war”, Mars. Mars was said to assist Roman soldiers during wars. It was believed that Mars would bring his two sons “Phobos” (fear) and “Deimos” (dread) with him into battle. The two moons of the planet Mars are named after these children as well.