It looks like they are going with Race Queen outfits for the 6th anniversary of Great Tankery Operation. I like how they put the color streaks in Anchovy's hair to fit the rest of her outfit.
It's too bad that many of the periphery characters haven't made it into Great Tankery Operation yet. Like the Aussies, Spaniards, Poles, the other French, most of the Germans/Japanese, some of the Brits, one each of the Finns/Americans... and most of the characters from all of the spinoff series. Though admittedly, some of those mentioned need to get actual names first, instead of staying forever in mob character status.
.... Though admittedly, some of those mentioned need to get actual names first, instead of staying forever in mob character status.
In the game, all the characters I have seen (except maybe Saki, hehe) have voice clips, including the characters from "Little Army", "Ribbon Warrior", and the crossover characters. I don't know if the Little Army and Ribbon Warrior people got any voice dramas or such things, but it looks like they assigned them VAs even though they haven't appeared in any animation. Here's the listing for the "Little Army II" characters from Bellwall: https://twitter.com/garupan_app/status/1387285453238382593
So I guess they would have to figure that out as well for any additional characters.