With Update 9.20.1, players who complete all 75 Personal Missions with honours* in a set, will now be rewarded with unique camouflage patterns.
Each tank will give players a set of three patterns: Summer, Winter and Desert, that can only be applied to the respective nation of each tank. All new patterns give a 2% camouflage bonus to both stationary and moving vehicle.
*Article updated with new information at 19:30 on September 21th 2017.
Source: WOT Express
Stug IV Camouflage Patterns for German Vechicles
Variation of ambush camouflage introduced in late Summer, early Autumn of 1944.
T28 Concept Camouflage Patterns for US Vehicles
Combination of two patterns: Coffee Stain and Chocolate Chip. Both were used by US Armed Forces, the first from 1992 to 2010 and the second from early 1980 to mid-1990.
T 55A Camouflage Patterns for German Vehicles
Modern Spotted camouflage pattern used by the Mechanized GRD Armed Forces, adopted in 1988.
Object 260 Camouflage Patterns for Soviet Vehicles
Consisting of irregular spot shapes of various shades, it was developed in the second half of the 20-is. Widely used by the Red Army.