OMG this is so much fun!
One piece of feedback -
I have a large army in Austin and a smaller one in Lubbock which is recapturing the province.
The Mexicans have an army in El Paso which is intermediate in size between my two stacks, i.e. if it faces both of them it will get whupped. (Everyone is quite fatigued but them more than me)
They start to march their army to Lubbock to pick on my small army.
I start to march my large army in Austin to Lubbock in support.
They stop.
I stop.
A few days later the Mexican army in El Paso, unable to spot my next move, starts to march to Lubbock. rinse, repeat...