The Regiment - The True Story of the SAS - Book 2

After the disaster that was their first mission, the SAS refused to
give up, and their second wave of raids proved a powerful validation
of the concept behind their unit. Unfortunately, they still have many
enemies at headquarters, and now they must capitalise on their
success. While they lack neither daring nor imagination, they will
have to contend with an enemy who knows how to adapt, and learn to
live with the terrible human cost of the war ...