
290,000 troops of Brazil First Army Group attack from the East, while 53,000 troops of the Chilean 1 Corps and 102,000 troops of the Mexico First Army Groups equipped with one M4 Sherman tank division attack from the West. While most Brazillian and Chilean troops are armed with Mausers and Springfield rifles and assorted sub-machine guns in the close-quarters combat role, About 1/8th of the Mexican army is armed with American M1 Garands and KP31 submachine guns.
Mexican Order of Battle:1st Armored Division - 50 M4 Sherman tanks with a 76mm gun, 100 Type 97 Chi-Ha "Toro" tanks, 45 repair/utility armored vehicles, 5 ambulances 10,000 soldiers in all. Small arms include Mauser, Springfield, and Mondragon rifles for foot soldiers and other personnel alongside M1 Carbines for tank crews.
2nd Mountain Division - 7,000 soldiers in all. Most are armed with M1 Garands, M1 Carbines, and KP31 SMGs.
3rd Infantry Division - 8,000 soldiers in all. Most are armed with Mausers, Mondragon rifles, and KP31 SMGs.
4th Infantry Division - 20,000 soldiers in all. Most are armed with Mausers, Mondragon rifles, and KP31 SMGs.
5th Infantry Division - 8,000 soldiers in all. Most are armed with Mausers, Mondragon rifles, and KP31 SMGs.
6th Armored Division - 100 Type 97 Chi-Ha "Toro" tanks, 100 assorted tankettes, 45 repair/utility armored vehicles, 5 ambulances 10,000 soldiers in all. Small arms include Mauser, Springfield, and Mondragon rifles for foot soldiers and other personnel alongside M1 Carbines for tank crews.
7th Infantry Division - 5,000 soldiers in all. Most are armed with Mausers, Mondragon rifles, and KP31 SMGs.
8th Infantry Division - 15,000 soldiers in all. Most are armed with Mausers, Mondragon rifles, and KP31 SMGs.
9th Infantry Division - 8,000 soldiers in all. Most are armed with Mausers, Mondragon rifles, and KP31 SMGs.
10th Infantry Division - 11,000 soldiers in all. Most are armed with Mausers, Mondragon rifles, and KP31 SMGs.
Even though America is probably economically crippled right now
American during WW2 had a larger iron, coal, and in general, "everything" industry than the Soviet Union, Germany, Italy, and Japan combined. They are not economically crippled.