Germany is the main user of Flecktarn. The camouflage pattern has been issued throughout that country’s Bundeswehr service branches (Heer/army, Luftwaffe/air force, some Marine/navy units, and even the Sanitätsdienst/medical service). The pattern is also used by Ukraine and Austria (where it’s known as Flecktarnmuster), Denmark (M/84 and M/01), Japan (Jieitai), and Russia (Flecktarn-D).
Each of these countries have added their own twists to the basic pattern, building on its effectiveness in regions ranging from barren deserts to snow-covered tundras.