As you can see from the Photos, Blue group will have to attack from the East to avoid over flying f11 or damaging the Hospital(Which was damaged in the actual mission, killing many injured German soldiers.) , the Red and Yellow groups can attack from the North.
Rules of engagement:Winter, 1944. Operation Overlord was only months away, and Allied intelligence forces were in high gear. Military Command was relying on the French Underground to provide vital support for the Invasion, destroying rail transport, communication links and supply lines. The German Gestapo was also mobilized, and appeared to be winning the battle. French agents were being arrested at an alarming rate, due mostly to one man, a French Hosier by the name of Lucien Pieri. His network of infiltrators and double agents were destroying the heart of the French Resistance Network, just as it was needed most. Though all information was highly compartmented, there were still some leaders in the Resistance who had to know about the planned invasion, dates, times and locations, so that they could perform their duties.
One of these men, Raymond Vivant, the Sous-Prefecture of the Abbeville region of Northern France, was captured and thrown into the Amiens Prison, in preparation for interrogation by the Gestapo. He was fully briefed on Operation Overlord.
A ground assault to free him was attempted, using local members of the Partisan Forces, but was repelled at the walls. Area Resistance leadership then sent an urgent request for assistance up the chain and the Allied Intelligence leadership, alerted to these events by Allen Dulles of the OSS, assigned the task to Air Vice Marshall Basil Embry of the Royal Air Force.
He developed a plan for the operation, code named: Jericho, that would require demanding bombing precision, perfect timing, and a lot of luck. It was also a terrible decision to have to take, because people in the prison would die, regardless of the accuracy of the bombs. With a prison population of 900 souls crammed into a jail made for 200, casualties were inevitable. Only a very few men knew the actual, terrible truth of the raid: Flight Commander Percy Charles "Pick" Pickard, was to take his flight in last, and if the walls had not been breached, his orders were to destroy the wing that held the political prisoners, including, especially, Vivant. Even more amazing, Vivant and other members of the Resistance inside the prison, knew and approved of Operation Jericho!
For more information about the raid, I recommend an excellent book,"And the Walls came Tumbling Down", written by Jack Fishman, Macmillian publishing.
The Outcome was more than could have been hoped for.