Found it quite interesting that you actually managed to make a RTS for the game jam! I think this genre is a bit hard to work with on such a small time, but anyway, you ended up with a nice entry, and it even has some story as well.
In my opinion there is somethings that could be improved, like adding a health bar to each unit: that way, it would have been easier to make weaker units be more on the back when attacking the enemy. Also, the font looks a bit blurry, at least for me. I think it might be a result of the 2d mode you selected? Not really sure here, just a guess.
De qualquer forma, jogo bacano! 👍