Alderamin on the Sky

is a Japanese light novel series, written by Bokuto Uno and illustrated by Sanbasō (volumes 1-5) and Ryūtetsu (volume 6 onwards). ASCII Media Works has published seven volumes since June 9, 2012 under their Dengeki Bunko imprint. A manga adaptation with art by Taiki Kawakami has been serialized in ASCII Media Works' seinen manga magazine Dengeki Maoh since May 27, 2014. An anime adaptation, announced at the Dengeki Bunko Fall Festival event on October 4, 2015, will air on television in July 2016. Madhouse is producing the animation, with Tetsuo Ichimura directing, Shōgo Yasukawa handling series composition, Kunio Katsuki designing the characters, and Keiji Inai composing the music.

Plot
The mighty Katjvarna Empire is currently embroiled in a war with the neighboring Kiorka Republic.

Within an unspecified corner of this empire, a certain young man was reluctantly preparing to take the High Grade Military Officer Exam owing to mysterious circumstances. His name is Ikta Solork.

As a man, Ikta abhors war, is slothful by nature, and worships the female form.

At the time, no one could have possibly predicted that a person like him would become a military figure worthy of being called a legendary general……

He who survived a world embroiled in war with his superior genius, Ikta. This tale will recount his tumultuous life up until this point, as the curtains are drawn for a spectacular chronicle of fantastical warfare!

Official
Official anime website

Other Sources
Wikipedia