I don't know if the book is on sale in Pakistan. I've asked Saeed Book Bank in Islamabad if they have it but haven't yet had a reply. It can't be obtained by anyone overseas --- I've had a deluge of emails to tell me so. It'll probably get onto the shelves fairly soon. Hope so, anyway...
My book, A History of the Pakistan Army, has just been published in a fourth edition. 24 chapters in this version, of 600 pages. Big book, but it hasn't been advertised anywhere.
Hope you enjoy reading it.
Best,
Brian Cloughley