I think your statements are uncalled for, and that this criticism of America is unjust. Running any military operation is very complex, and even more so when you are dealing with a military the size of the U.S. military. Not to mention the complexities combining the military efforts of several nations.
Friendly fire seems to be limited to the Americans. You never hear of the Royal Marines accidentally shooting up a car of journalists or blowing an American plane out of the sky...
The Americans are very aggressive militarily. They are involved in a lot of conflicts, so it makes sense that the total number of mistakes would be higher. The more conflicts one is involved in, the higher the number of mistakes that will be made. That is simple common sense.
Running a military the size of the U.S. military is a HUGE undertaking. A side effect of that is more blunders. I don't think you are being fair.
The Iraqi's did not kill one coalition serviceman during the last war but the Americans killed quite a few by friendly fire.
That makes sense. The Iraqs have a smaller military and they are seasoned in fighting desert conflicts.
Richard