I think of it as roughly equivalent to Texas seceding from the US, the US invading, then being pushed back and desperately trying to hold on to El Paso and Amar

I think of it as roughly equivalent to Texas seceding from the US, the US invading, then being pushed back and desperately trying to hold on to El Paso and Amarillo to the point that they are putting conscripts into M60s and sending them to the front lines.