A very good book....Helicopter Combat Ops
I just finished reading "Chopper" by Robert E. Dorr and found it very interesting reading. It is a collection of personal accounts by various pilots from WWII to The War on Terror.
One account of a Vietnam combat flight in a Cobra by Ken Whitley and Robert Cashon is absolutely riveting! They along with their their Scout Pilot, Rod Barber recount the flight where the Cobra gets hit by ground fire, loses all fore/aft cyclic and only retained very slight lateral cyclic control but ultimately made a safe landing at Song Be, a 1st AirCav base camp. The explanation of how they figured out a way to control the aircraft while close to the ground in bad weather, coordinate assistance from an Air Foce FAC aircraft in locating Song Be really shows what a good crew can do under extreme stress.
Those Cats used up eight of their nine lives on that one flight!