The image on the cover of Inside Cyber Warfare is of light cavalry, as evidenced by the lack of armor adorning the soldier and his horse. During Roman-Germanic wars, the duties of reconnaissance, screening, and raiding fell on the light cavalry, while their more heavily armored counterparts engaged in direct enemy combat. Their weapons included spears, bows, and swords.
The tribes of Central Asia, including the Huns, Turks, and Mongols, often used light cavalry for similar missions.
It is important to note that practices, weapons, and so on varied depending upon historical period and region.
The cover image is from the Dover Pictorial Archive. The cover font is Adobe ITC Garamond. The text font is Linotype Birka; the heading font is Adobe Myriad Condensed; and the code font is LucasFont’s TheSansMonoCondensed.