According to this article – from a reputable source – 13 US Servicemen have been killed and a total of 41 from all ‘allies’.
https://en.wikipedia.org/wiki/List_of_U.S._service_members_killed_during_the_2026_Iran_war
Quite prepared to believe the true figure is somewhat higher, 100 at the very most perhaps; but 1,000s is for the birds and the most extreme of conspiracy theorists.
I’d be intrigued to learn how the alleged 1,000s have died, considering that the USA have waged war only from the skies, or by remote ordnance launched from the gulf states. The USAF must have no planes left 