Way back in 2013 for April Fools, War Thunder did a big pony joke introducing heavily armed pegasus flying around blasting everyone out of the skies. The comments back then are always fun to look through if you want a bit of a nostalgia bomb!
For their 10th anniversary, they brought the ponies back along with references to all of their other April Fools shenanigans. You can't fly around as one, but they did add a little carousel with their war ponies as the horse replacements. A screencap of it can be found above!
Thanks to Shrimpo for sending it!