War with Elves for Profit and Amusement - Elixir of Power, #1

A young half-elf hermit with forgotten magic. An army officer with ambitions as grand as his moustache. Decades after it began, war still rages between humans and elves. For some, war is a proving ground, a chance to win glory and prestige. For others, they must avoid the horrors of war at all costs. The Elixir of Power could make guns and cannons-and elves-a thing of the past. All Slee wants is to remain hidden from the world, but the fighting is never far.
With the mass-produced gears of war devouring the land, how could a reclusive half-elf like her ever hope to find peace? All Fentor wants is . everything. To make a name for himself. To be remembered. To win. With the Elixir of Power in his hands, victory is at last within reach.  When these two meet, their worlds begin to change-in the most unexpected of ways.