I'm sorry, I don't have specific information about a 'Major Walter Khan' in Pakistan. There could be many individuals with this name, or it might be a relatively unknown or personal story not widely reported.
Without more context, it's difficult to detail the real story of Major Walter Khan in Pakistan. It could be that he was involved in military operations, or perhaps some local initiatives within Pakistan. Maybe he was part of a specific unit or project that has not gained international attention.
Major Walter Khan in Pakistan - the name alone doesn't ring a bell in terms of a well - known public story. It's possible he was a military figure who worked on internal security, border protection, or military training. However, without additional details such as the time period he was active, or the particular events associated with him, it's hard to tell his real story accurately.