Ok folks, hopefully this one will not be difficult. I skipped the most famous drawing of it which some might recognize immediately for one including some flags.

Judging from the moon on that flag, I'm guessing it involves Turkey or the Ottoman Empire. The Battle of Alcazar, perhaps?

Play?
It's just what it's known as in English. It's also called the Battle of Three Kings, or the Battle of Alácer Quibir. If I remember correctly, it was King Sebastian I's attempt to help some Moroccan sultan recover his throne after it was taken by the Ottomans.

You got it :)

Battle of the Three Kings, Alcacer Quibir or Ksar el Kibir - Portugal vs Morocco as far I know... others were peripheral players. The surviving king of the three served the Ottomans for some time in his youth, but as far I know they were not involved directly. The Saadi dinasty in Morocco had a small golden era following this battle and some of personal details of the folks involved read like a novel.

I was not familiar with it being called Battle of Alcazar, though I saw phonetically it was quite similar to its more official names. Hence I thought you were right but not sure. Google threw up results indicating some English playwright inspired by the actual battle titled a play as such.

Guess this battle. There isn't too much detail, but still.

Legnica?

That was quick. Yes indeed you are right. Also referred to as the Battle of Liegnitz, that occurred on April 9, 1241. A battle that the Mongols undertook so as to prevent the Polish and their allies (including some Crusader orders) from flanking their main thrust against Hungary, and one the Mongols successfully accomplished. It proved to be a crushing defeat for the European forces. The Mongols used their much favoured Feigned retreat tactic as well as using tar barrels to send smoke across the battlefield, thus preventing one half of the polish army from seeing what was happening to the other half. All in all an extraordinary battle.

Indeed, some people never learn... ^^

Time for another continent and another century:

I knew this one. The mamluk hats and the black fighters made the Mahdi come to mind immediately. It's the end of the siege of Khartoum.

Yet something different.

Looks like the battle of Santiago de Cuba to me. I'd bank on that being it.

Right on. Don't skip your turn now. ;)

If you can't post links maybe PM someone your pic.

Post links, no, but I can make attachments!
I'm not sure this one is entirely fair since it's a war and not a battle. However, it is a lovely obscure one.
If people are stumped, I'll release one of my infamous poem hints.

It's clearly a wall painting. That plus the style makes it seem Eastern. Maybe Byzantine, maybe even Caucasus kingdoms.

But that's too broad for sure. I'm not going to google obscure Georgian wars or something of the sort :)