It’s the same thing in the US. I see C-130’s flying in formation and think they’re probably training or clocking flight time. OP is using terms like “militarism holidays” which I’ve never heard anyone use in conversation here, ever. We have “air shows” on patriotic national holidays like Independence day, or Memorial day. At some large sporting events like the NFL Superbowl, or maybe the MLB World Series get “flyovers” over the stadium.
Space is vast. Just like dat ass.