The vaccine use by US troops was a veternary vaccine produced by BioPort of Lansing, Mich. The FDA halted vaccine production at the plant about a decade ago because of improper manufacturing practices.
They did this as an emergy because Saddam had large quantaties of anthax -— somewhere. And, if inclined, could have used them.
Shortly after the Gulf War, the IDF developed a much more effective vaccine that has been tested not by exposing people to anthrax, but checking for antrhax anti-bodied in the blood.
I’ve taken it; it’s fine. 3 shots and then every three year boosters.
I presume the USA would copy the Israeli vaccine.