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Cats and Mice
By Kenneth L. Klippel
Group Radar Officer, 390th Bomb Group

Radar_1.jpg (28138 bytes)
Ruhland, Dresden, Cottbus and Gorlitz as seen on the radar screen

This is a story about Pathfinders (Mickey Ships), a combined USAF-RAF mission, the biggest gaggle of airplanes with Fireball Able leading the parade, a brand new bombing technique called "Cat and Mouse," some anxious moments, a real lesson in the value of training and practice, plus some incredible luck.

It happened on the 390th Mission #218 to Duren on 16 November 1944 when it was decreed that the Allies would achieve a major breakthru of the Siegfried Line to establish winter positions along the Rhine River. The spearhead of the effort was to be every airplane that could drop a bomb. The initial wave was the 8th Air Force, followed by the RAF and then the 9th Air Force. No evasive routes... just fly there directly, bomb and go home.

Since this was a close support mission, very elaborate precautions were taken to prevent a repetition of the unfortunate situation that killed General McNair and many other Americans on a similar close support mission at St. Lo earlier.

The bombing technique to be used was known as Micro H, or colloquially as "Cat and Mouse." Instead of using the conventional H2X (Mickey) radar bombing system where the radar beam was pointed at the intended target, and thru a bombing computer, used in conjunction with the Norden bombsight, picked the right release point, a new system was to be used where the pathfinder receiver was tuned to ground beacons in friendly territory. The theory was that one beacon (the cat) would be used to kill drift by flying a series of rhumb lines around it while the other (the mouse) would be used to calculate rate. The objective was to improve accuracy because measurements could be made more precisely from the beacons than they could from reflected signals from the ground.

The only rub was that both beacons had to be received and displayed on the radar scope at the same time. Fine in theory, but difficult in practice due to the poor stability of the airborne receiver.

Prior to the actual mission, we had a number of practice missions and learned that the Mickey Operator would frequently lose one beacon or the other and that it was necessary to retune the receiver at the R/T unit (in the waist portion of the airplane). The Mickey Operator was unable to do this, hence my story.

While the mind gets misty after 40 years (it's the second thing to go) certain memories stand out loud and clear.

We were to lead this incredible stream of airplanes to the target and Colonel Moller was to be the Command Pilot. Obviously, everything was to function perfectly. Normally, I was not allowed to fly combat missions because someone on high was afraid I might divulge classified data regarding the H2X if I went down. However, in this case the "Old Man" gave me a special dispensation to go (my 6th mission) and it turned out that his judgment was good.

After takeoff, assembly, etc., we made landfall and were pleased to note that we were receiving both of the requirement beacon signals and established our course accordingly.

Upon reaching the IP and turning toward the target, we could only receive one beacon and the tuning control was at its full clockwise position. The training and practice now paid off. I hooked up to a walk-around oxygen bottle and proceeded to the Radar unit in the waist, hooked up to the intercom, extracted the special tuning tool I had brought for the occasion and called the Mickey Operator. Thru his manipulation of his tuning control, following my instructions, in conjunction with my operation of the special tuning tool, we were able to again receive both beacons and proceeded to the target through "moderate flak" that you could frequently hear. Training and practice paid off. (Remember how much we enjoyed those training missions?)

Then near disaster struck in the form of a piece of flak which I still possess. I was still sitting on the framework of the radar when this piece entered from below (I was facing forward), cutting the left legstrap of my parachute harness and coming to rest in an electrical junction box on the port side of the airplane.

The bomb run was successfully completed and we returned home. I regret that I can't remember which lead crew I flew with, but they did a super job.

Copyright © 1997 by The 390th Memorial Museum Foundation