Re: Real Realistic attack, really...
I think the soldier performed an important civic duty by intervening in the assault. As members of society, it's important to establish and protect the rule of law. Even when you have some risk involved, it's in every citizen's interest to make sure the good guys always win.
That's not to say everyone must rush into the middle of any encounter they see. Call the police, honk your car horn, flag down help, whatever you can do, you MUST do.
In my opinion, the government in his country should give him a disability pension and rehabilitation benefits. The big error the soldier made was that he failed to plan for the thug's return- if he were staying in the area, he should have had the police lay an ambush and run them all downtown for deadly assault and mob action. The neighborhood would be rid of some dangerous elements and the cops would appreciate the bust!