Remember, everyone told him signing up for service was a dumb idea, and everyone in the service told him trying to become infantry was a dumb idea. His experiences don’t exactly prove them wrong.
In the movie when everyone is signing up and the triple amputee recruiter says “the infantry made me the man I am today!” is literally all you need to know
In the movie when everyone is signing up and the triple amputee recruiter says “the infantry made me the man I am today!” is literally all you need to know