How many U. S troops served in total from 1956-1975?

1. 9,087,000 military personnel served on active duty during the Vietnam Era

I hope this helps :)

Explanation:

on november 6 and 7, 1917 (or october 24 and 25 on the julian calendar, which is why the event is often referred to as the october revolution), leftist revolutionaries led by bolshevik party leader vladimir lenin launched a nearly bloodless coup d'état against the duma's provisional government.