To quote the product description from Amazon's website:
"Corporal Thomas Lynch won fame at the Battle of Arras, and felt the shame of defeat at Dunkirk. A year later, as a member of Britain's elite No. 3 Commando, Lynch wants nothing more than to go back over the Channel and kick open Hitler's Fortress Europe, guns blazing.
Introduced by his commanding officer to the enigmatic Lord Pembroke, Lynch is offered a chance to be part of a special team of hand-picked Commandos. Their assignment: sneak into occupied France and ally with the French partisans to fight back against the Nazis.
Lynch readily accepts the challenge, but when the mission goes awry from the very beginning, and the motives of the partisan leader become suspect, the Commandos begin to wonder about their role in the mission: trusted allies with the partisans, or worms dangling as bait for a hungry fish?
COMMANDO: Operation Arrowhead is a military action - adventure novel written in the spirit of classic war movies such as The Guns of Navarone, The Dirty Dozen, and Where Eagles Dare, mixed with military adventure fiction such as Len Levinson’s The Sergeant and The Rat Bastards series."