Classics like 300 ,Troy and gladiator if you didnt watch yet

Or :- Enemy at the gates: battle of stalingrad .(ww)
-Alexander the great.(Macédoine)
-The last Samurai(Japan)
-Kingdom of heaven ( Middle orient crusades)
-Marie-Antoinette (France)
-Schindler's list (ww)

If you play video games, i highly recomend playing : Rise of the argonauts, a game based on greek mythology including alot of famous heroes like Achile and Heracles.
You Will learn alot of stuff while playing.

Cant help with documentaries.

these mainly revolve around ww2 but if you're looking for more dated history I can't help

pan's labyrinth, days of glory, the boy in the striped pyjamas, man of war & black book

and downfall, obviously

boku no pico. it's considered one of the most influential history movies of all time.

Thor

I'm more interested in learning about the history of "least noticed" countries in Europe

Braveheart is so long but I'll add it to my list! I want some easy-watch movies before I go to bed

saving private Ryan is amazing

For films Braveheart and Gladiator come to mind

I prefer films but yes they are fine

Documentaries?