I found some info on two of my uncles, the one that didn't make it home was in the newly formed Americal division on Guadalcanal relieving the marines there. They mixed the army in and the battle-hardened marines trained them causing a lot less early kia's. He died on Bougainville in the Soloman Islands, the day before a big push to move the Japanese off the island.
One that did survive saw a lot of action, 8th infantry, 28th infantry regiment, company B. Illinois National Guard. They landed at Utah beach after the invasion and proceeded east and south to close off a peninsula to try to capture ports including Brest in France. They had 10,000 casualties from 170,000 troops and were only able to contain the German fortifications until the end of the war. As they surrendered the Germans destroyed the ports so they were never used. They were in the battle of the Hurtgren forest and the Battle of the Bulge, liberated a concentration camp. He described most of the things in the band of brothers movie.
Another uncle and father in law's service remain mostly in obscurity.
I did work with a pilot that had 3 air victories in a P51 mustang. He said the two ME109's were fairly easy and then described the dog fight with an FW190. He said that guy was good and his plane did everything my mustang could do. He said he was getting pretty concerned and then the FW pilot made a mistake. He said he was lucky to come back that day.
These guys were my heroes. I was instructed never go near my uncle if he was asleep, he had come up swinging more than once. A backfiring car would send him ducking for cover. They all paid a hefty price for serving even if they made it back physically unhurt.