These are the Nationality Decals that can be won in War Thunder. They will appear on planes of that nationality in the customization areas on that plane.
“As well as unlocking skins and medals War Thunder also offers players the chance to unlock...Decals
“These badges are obtained using aircraft from the USA, Britain and Australia RAAF Roundel: 15...Allied Badges
“A quick to make out there no emblems for Italian aircraft 1/Ku.FI.Gr 706: Buy 3 rank rank IV...Axis Emblems
“This Badges apart from the ANR Roundel only apply aircraft from Germany and Italy as Japan has...Axis Badges
“These decals all apply to Japanese aircraft IJNAS; 10 victories with a battle activity of 50%Japanese