The Regiment - The True Story of the SAS - Book 3

Despite the heroic efforts of L Detachment, the unit’s victories
haven’t managed to stop the advance of the German war machine. Soon,
Rommel is at the gates of Egypt, and losses mount among David
Stirling and Paddy Mayne’s men – some crueller than others. In the
end, they will have to reinvent themselves and give everything to
push back the Desert Fox and earn their name at last: The Special Air
Service!