CrimsonKidCK:
Still, thousands of those Americans were going to be killed storming the beaches of Normandy and driving across France into Germany, and thousands more by having their planes shot down over Europe, so IMHO it's hard to consider them "overpaid" for risking (and sometimes losing) their lives.
For the overpaid part to work you have to think of it "comparatively" overpaid. The British troops were doing the same jobs, taking the same risks, and dying in the same ways for much lower pay. The Americans were doing the same job but getting more money and better rations than the British so of course there was resentment.
Add in the fact that US troops could buy things in PXs that were unavailable or tightly rationed and they were impressing the local girls with their money and their presents and there was more resentment.
Of course, underlying all that resentment was the fact that WWII started in 1939 and the US didn't get involved until late 1941 - after France was conquered, the British Isles were heavily bombed, and you had massive food shortages because of the U-boats sinking freighters. It's a bit like a team that has fought against the odds to make the playoffs then gets a late season trade who's there to save the day.
Goodgulf