here's an overview of Czechoslovak content (emblems, inscriptions) in 9.10 as mined out from the test client.
Decal -Wargaming used a rather obscure decal used on several vehicles during WW2 (Czechoslovak-operated IS-2 tanks).Czechoslovak community is not very happy about it and promises to use mods to make the flag look more historically correct (the blue should be to the left, white should be up, red should be down)
Czechoslovak emblems - two: older version of the Czechoslovak state emblem and the emblem of the Czechoslovak units in the western front.
Czechoslovak award - for destroying each Czechoslovak tank at least once (excluding premiums)
Inscriptions - several historical inscriptions. The "Death to German murderers", an historical inscription wasn't implemented.
Lidice - named after a village burned by nazis to the ground with its population either murdered or enslaved. This inscription belongs to one of the most famous Czechoslovak wartime T-34's.
Pravda vítězí! - "The truth wins": Czechoslovak presidential and national motto, originating from 15th century. Used on one of the vehicles participating in Prague Uprising.
T 40 icon
Crew ranks - vojín, svobodník, desátník, četař, rotný, praporčík, podporučík, poručík, nadpodučík, kapitán, major