If Bolivia and Chile fight, Chile wins.
Next question?
In the 1960 the Bolivian army attempted to take out the administration and take over the country. They got their butts kicked by the national police.
When I was there and Bolivia and the US had good relations in the 1990s, the national police had the latest US gear, including M-4s, very professional new uniforms.
I ran into some of their army guys at a checkpoint and they only had a few old rusted out WW-II mini 14s ragged uniforms and sandals instead of boots.
Chile has never lost a war. They have a small but very professional military. Chile has had a fair amount of German influence in it’s military in the past.