There are protections under Bankruptcy Law specifically for service members.
The Service members' Civil Relief Act provides relief to service members in certain types of civil litigation. Read more here.
In addition to Chapter 7 and Chapter 13, there are other forms of bankruptcy.
Some of the other more frequently used forms are:
Chapter 11 Bankruptcy, often used to reorganize a business. You can read more on Chapter 11 on the US Court Bankruptcy site.
Chapter 12 Bankruptcy, often used to reorganize family farms or fisheries. You can read more on Chapter 12 on the US Court Bankruptcy site.
Chapter 15 Bankruptcy, a relatively new form, introduced in 2005, addresses cross border issues, where assets and claimants may be in more than one country. You can read more on Chapter 15 on the US Court Bankruptcy site.