This is the problem with public notoriety. Tillman did not just join out of love for country, he went, in part anyway, because defense of the nation seemed foisted on the least fortunate. And he wanted to critique the war first hand. Some in Tillman's own family weren't sure the Army would want him in a fighting unit given his propensity to question orthodoxy.
Tillman: https://vault.si.com/vault/2006/09/11/remember-his-name
Jake Plummer on Tillman: https://www.si.com/nfl/2015/06/30/si...denver-broncos
Tank is being an ass about it, but some in his own platoon wondered the same thing he is. They wouldn't choose to be there if they could earn five million elsewhere. He was looked at as an interloper.