In fantasy literature there are plenty of examples of cultures (such as the Dwarves of Lord of the Rings) who favor axes or hammers above swords in combat. Did any historical army follow that pattern? Obviously some people in any battle will have unusual weapons, and an angry mob will grab anything that's convenient. Some armies (like the Greek phalanx) also used pikes or other length-based weapons that reduced the need for hand-to-hand weapons entirely.
But were there ever any armies where they fought up close and face-to-face, but where the standard melee weapon was an axe, a hammer, or something other than a straight blade like a sword or knife? I have a distant memory that Bronze Age cultures in the Middle East used some kind of sickle-shaped weapon, but I can't think of any after that.