A pretty solid entry!
I discovered this the other day on a Twitch Stream, and I was sad to see that the streamer didn't gave enough attention to this game.
I played the tutorial and finished won entire match after it (the scale 4 units feels amazing), and I really appreciated it.
As a fellow game developer, I'm astonished to see how few ratings this game has! It's an RTS of a scale that feels impossible to built during a jam, so congratulations!
We were 4 seasoned people with many games on our shoulders and we created a small arcade game, and we were all amazed by the scale of your game.
TL;DR: congrats, I really liked Siege to Scale!