The Chinese, The Americans, the Middle Easterns, and all those in WW3

"We were trecking through the land of Canada, when an implanted russian lab device exploded underground. I had shrapnel going through me. We were in a vehicle moving at tens of mph. It was frigid as the United North State of as Maine is in January. As soon as the debris went through, water would start to freeze, at least it seemed that way. This debris going through the whole environment was tens of degrees below zero. It would go through my arms. This was frozen gas. Then, all of a sudden, there was mist going through everything. It would start glowing in the night, and it would be over 200 degrees. We Shot back at them, and our ammo was hot, as in 124 or more degrees. They were acclimated to frigid temps, and came from the land of Siberia. Us, on the other hand... we came from the heat of the mighty Middle East, and were acclimated to hot hot hot! They ran away from us. They thought we were possessed by demons."... And that was when the Americans steppin into the fight. They had now entered WW3. They charged the Siberian Chinese using chemical weapons, and they counteracted with radiation guns. We had to retreat, and devised a plan to get rid of the Chinese from Canada, so that we can make the world great again. But the Americans stood in our way. They started creating artificial quakes and tornadoes, both at once, to at least cause the Chinese to retreat from us, so that we could reach a truce. Then we got served with acid falling from the sky. We got in the car, and drove down to Central America, where we hid in the dense, humid jungles. We had to rely on extremely small doses of food and water. So eventually, we gained an advantage in our survival ability. "
Narrator: This has been a journal entry from a Middle East soldier who tried to retreat with his army from the American Chino War. The story, however, doesn't end there. In a few years, WW3 erupted, again! And now the game got more complicated. At this time, the Chinese were much more numerous than the Americans, and smaller in size. They were more acclimated to surviving at high altitudes, such as the Himalayans. However, America was, more advanced than the Chinese. A very small part of the Chinese actually had obtained better tech that was was incomparable to America. However...the Americans overall, were approx. equal in term of tech. They composed of a few major divisions. One of them was acclimated to long term survival in temps far lower than subzero, while another division could actually survive extremely dry, hot places for extended times. Yet the Middle easterns had an advantage over this. While they weren't quite able to do that much, they could survive changes of weather that were extremely sudden, such as a change of 50 degrees over the course of 30 minutes or so. They could attack far quicker than either Chinese or Americans. This made them generally more efficient fighters. But then, in the spring of 2034, another force came into play. It was an alliance of Vietnamese, and Indians. They fought to gain control over China.