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You can cap the flag within 2 pearls

 

The map looks great I can tell you put a lot of effort into the terraforming and the structures. I do see a couple large gameplay issues, though. Firstly, the map feels tight and there aren't a lot of comfortable walking spaces. Also since the map has so many trees and the flag is on an elevated platform soldier is going to be a problem. I recommend you make the map a bit larger and get rid of about 50% of the trees.
I also want to point out how a lot of transparent blocks, like leaves, can cause lag for players. You probably aren't noticing it since your graphics are set to fast (which means the leaves aren't see-through) but for most players the leaves will lag the map a lot.
That's all I have for now. There are a couple gameplay things you should fix up but other than that the map looks awesome and I'm genuinely looking forward to your new projects

 

The theme is great although it could be executed better. For one thing (this is probably just me) the grass on grass bothers me (which doesn't effect the map but just keep that in mind). Also, there is no coal ore meaning that soldiers can go and climb (not as infinite today but...). Also you should probably remove some of the trees to reduce lag. Lastly, you should change your spawn blocks and the design of the floor in spawn. I noticed that blue wool is the spawn and there is exposed blue wool (example being the flags) that red peeps can stand on and they would die.
Overall your map is good but you can make some simple changes to make it better.

 

I'd suggest take some of the trees away, too many map the map cluttered and hard to get around, and no soldiers cannot climb coal ore.