In 2017 Louhimies directed a World War II Drama The Unknown Soldier[4] that had its premiere October 27, 2017 as a part of the official 100th anniversary of Finnish independence program.

The film was described by critics as gritty, forlorn, honest and realistic as well as a pacifist piece confronting less pleasant sides of Finnish history.

The film is Finland's biggest box office hit since 1955, with over million viewers[5] and it's still gathering more views on TV and on streaming platforms.

In Conflict a small, Finnish seaside town is preparing to celebrate midsummer's eve, when an unknown enemy invades the peninsula.

[12] In 2023 Louhimies also directed The Inheritance (TV series) for Channel 5, starring Gaynor Faye, Larry Lamb, Robert James-Collier, Jemima Rooper and Samantha Bond.

In 2016 Louhimies made his international breakthrough by directing the serial drama Rebellion for Irish broadcaster RTÉ and Netflix, starring Charlie Murphy (actress), Brian Gleeson (actor), Ruth Bradley, Sarah Greene (actress), Michelle Fairley, Niamh Cusack and Ian McElhinney.

In March 2018 8 Finnish actors came forward accusing director Aku Louhimies to have subjected them to demeaning tactics in the work.

[17] The book Aku Louhimies — Elokuvaunelmia (Like, 2017) by non-fiction author Satu Jaatinen, examines the director's career from Restless to Unknown Soldier.