Bridge Over the River Kwai
From CHINA BURMA INDIA to the KWAI
by Lt. Col. William A. (Bill) Henderson, USAF Ret.
CHAPTER VII
THAT WOODEN BRIDGE ON THE KWAI
As the Allied ground forces pressed on toward Rangoon, our higher headquarters placed more and more emphasis on the destruction of Japanese supplies and the delivery of new supplies. Because of heavy losses of their commercial ships as well as combat ships, delivery of supplies to their far-flung troops was becoming an ever-increasing burden. The huge success of their initial advances was beginning to show that they were too successful as they had overextended their supply line capabilities.
By mid-1942 Allied submarines, warships and aircraft were starting to close the sea route to Rangoon via Singapore and the Straight of Malacca. Increasingly desperate for an overland route to supply its troops in Burma, the Japanese Imperial General Headquarters directed its army to build a single-track railway from Siam (Thailand) to Burma. The railroad was to transport 3,000 tons of supplies daily from Ban Pong in Thailand via the Three Pagodas Pass on the Thai-Burmese border, thence to the existing Burma railway at Thanbyuzayat, located between Moulmein and Ye.
Work was begun in October, 1942 with an August, 1943 deadline for completion. The more than 250 miles of track, much of it through dense jungle and over many streams was finally finished in October of 1943. work parties consisting of Allied prisoners of war, and later, impressed laborers from many parts of Southeast Asia, progressed eastward from Thanbyuzayat and westward from Ban Pong. The lines met just south of Kon Kuta. Thousands upon thousands of the laborers had died building the railroad. Thousands more would die maintaining it from floods, creeping jungle, and Allied air attacks. The bridges of the railroad were especially vulnerable. Considered the most vulnerable of these bridges were the bridges near the town of Kanchanaburi, the headquarters of the Japanese 5th Railway Regiment. This Japanese unit supervised the work westward from Ban Pong.
The Japanese chose to cross the very wide Mae Klong River at a point just above its convergence with the Kwai Noi, then follow the Kwai Noi westward. The wooden bridge across the Mae Klong was completed in February of 1943 and a steel and concrete bridge, brought in piecemeal from Java by the Japanese, was completed some three months later. (Perhaps its nearness to the Kwai Noi is the reason that the Thai tourist industry has designated this as the location for the novel Bridge Over the River Kwai and set up a locomotive and other tourist sights. Returning to the site in 1971, I found the steel bridge rebuilt and still in use, but only a few broken and barely visible support piles of the wooden bridge remained. Pierre Boulle states that his book is strictly fiction and he chose no particular site on the railroad for his book--letter to Ray Hertzlin, tail gunner.)
These two bridges were several hundred yards long. our headquarters calculated that if these two bridges were knocked out, all supplies would have to be unloaded, transported by boat across the river, reloaded and thus be vulnerable to further strikes as they accumulated. The tedious delays in transporting supplies would be important to the war effort.
While we were in China, a number of missions were made against the two bridges. They had little success. Curly and Brad flew with other crews, on the 5th of February and one of them on the 9th of February, against the bridges. Still the bridges stood.
Our crew had flown on February 7th and 12th, so we did not fly on the big strike of the 13th. The Kanchanaburi bridges had become almost a grudge battle with Group Commander, Colonel Harvey T. Alness. On February 13th four Liberators from the 493rd Vanguard Squadron and six from the 9th Cobra Squadron attacked the bridges. In the lead was Lt. Gene Morris. Skimming in at 300 feet, his bombardier, Lt. Frank Nelson, brought down two spans of the steel bridge. Follow-on crews inflicted further damage to the steel bridge as well as some damage to the wooden bridge.
In March of 1944 photo recce planes had reported that the slight damage to the wooden bridge had been repaired and the "bypass bridge" was once again taking traffic.
On April 2nd, our crew was alerted for a mission the next day. This began a sequence of events that had some peculiar facets from the outset. For example, our mission briefing was just past midnight at 0030 on April 3rd, with a takeoff time of 0230. Our missions usually took off near dawn or later. When the route and target were revealed, a groan went up f rom the crews. Back to the bridges. Sure, the new cruise control techniques and bomb bay tanks made this possible, but it was an awful long haul and anti-aircraft fire from Japanese gun emplacements seemed to be increasing in intensity and accuracy.
Since the wooden bridge still stood, it simply had to be put into the water. Previous missions at very low level using the fixed angle D-2 bombsight had not been as successful as desired. Low level aircraft presented little aiming time for the enemy anti-aircraft guns, but the bombing inaccuracy, time delay, and skipping of bombs did not do the desired damage. Accuracy of flak at our medium bombing altitudes or not, the aircraft would be staggered in at altitudes from four to six thousand feet bombing altitude. on the plus side was the fact that this altitude represented the best bombing altitude for synchronous bombing with the Norden bombsight.
The Outlaw Squadron would lead the pack and Crew T-333--our crew--would be lead crew of the bridge busters! Six 1000-pound demolition bombs in the rear bomb bay, instantaneous fuses, to be dropped at minimum interval, two at a time on each of three passes. A Liberator loaded with frags would precede us to drop anti-personnel bombs on the anti-aircraft gun emplacements. If the flak- suppressant ship was successful, this would in theory run the Japanese to cover and the bomb carriers would be home free.
For some reason, George Twelvetrees was not flying with us that day and Cliff Webb was nose gunner. I could never recall who the substitute gunner was. Should this have been omen #17.
Takeoff and navigation to the target area was normal. Long hours of very low flying. As usual, low and slow to conserve fuel and avoid enemy detection. We were becoming one of the older, more experienced crews and perhaps a little complacent at this juncture in time. These long hours prior to and after the target were near being hours of boredom.
We passed east of the Three Pagodas Pass area and I went into the nose section to talk to Ray Hanson and prepare the bombing equipment. I entered the bombing tables and calculated the information to get the trail, actual time of fall (ATF) and disc speed, and placed the information in the bombsight. Next the number of bombs to be released and the interval between bombs was set into the intervalometer. I was ready for the initial point to head into the target on the bomb run heading. I then set in the pre-determined drift and calculated dropping angle to prevent excessive killing of rate and course on the bomb run with the course and rate knobs.
As we neared the IP we could see the entire target area. There was no evidence of bombs having been dropped on the suspected anti-aircraft sites. No smoke, no dust. We scanned the skies for the flak suppressant aircraft. They were late. Decisions, decisions. Had they been forced to abort because of mechanical difficulties? Did we have enough fuel to delay and wait? Had we already been spotted?
The decision was the pilot's. Curly didn't wait long to make it. He made the only sensible decision he could have made under the circumstances when he stated, "Crew, this is pilot. Get set, we're going in."
At this time we were over the IP and headed toward the wooden bridge target. "Pilot, this is bombardier, level the aircraft for bombsight gyro leveling-steady ... steady. Gyro leveling is complete; give me control of the aircraft through the autopilot for the bomb run."
Now it was time for extended vision in the sight to pick up the exact aiming point as early as possible. It appeared thin as a knife blade. Precision, precision. Then, after the target traveled through extended vision, lock onto the target and kill drift of the course and rate. Pre-computation had been excellent, for little adjustment had to be made. Bombsight trigger up! At this time, one of the gunners reported a few bursts of flak, high and to our right. The air was smooth and the crosshairs stuck. Bombs away. But only one bomb went down! Quickly I checked the intervalometer. It was correct. Then I again looked below and saw that the one bomb hit squarely at the center of the spans over the water portion of the river. Not just damage, but total destruction of the center spans. The wooden bridge was down!
Still no other aircraft. I double checked the intervalometer by going back to zero and once again setting two bombs. We cut slightly short of the IP and headed in on the second run. Again everything looked perfect. The gunners again reported flak, heavier, at our altitude, but off to one side. Bombs away. Two bombs. Cross hairs had drifted just to the left edge of the six-foot wide bridge. The bombs hit about ten feet to the left with no apparent damage.
Still no other aircraft. We quickly returned to the IP (slightly west and south of Chungkai prison camp). This time I went ahead and cranked all three bombs into the intervalometer to insure completion of the bomb load. With no flak suppression aircraft, we couldn't afford a fourth run. Leaving the IP, we noted the flak almost immediately. Again the cross hairs of the bombsight stuck right on the target. Just before bombs away , two other aircraft arrived. Also, we could hear the flak bursts. The gunners reported flak very close to us. I could see some bursts beneath us. Bombs away. Then I made a foolish mistake. I asked the pilots to hold heading just as the bombs hit so we could get photographs. Another very near miss.
"Pilot from bombardier, O.K. to turn." With this the left wing went up near vertical and we started a turn. Simultaneously, we were hit with several bursts of flak. We immediately began to lose altitude. Brad thought this sent us into a left turn, but I believed with Curly that we went to the right. The two could never agree in later years on exactly what happened, but I would always contend that under the minutes of stress that followed, it is not unusual for two people to differ on the fine points.
Years later, Brad wrote to me. "The ship started vibrating.... The instrument panel was a blur and I had to steady it with my hands to check the gauges, which indicated no engine problems. Curly called for help on the controls, which I gave him. I believe we made about 2-1/2 turns before we could stop the spiral. I had both feet pushing on the top of the right rudder. After we stopped the spiral and got the nose up we were about 180 degrees off course. We also discovered we had no aileron control. The ship was wallowing, the nose in an elliptical orbit on the horizon. If we tried to turn left we would be in the same predicament we just recovered from. we didn't have enough rudder control to turn right even with both of us standing on the rudder. Curly started using trim to help us on the rudder and as the ship was still in a stall it went over the top of us or what is technically known as a vertical reversement. I had purposely done this maneuver in a single engine aircraft but never in a B-24. I remember a pilot from Consolidated demonstrating one at Tonopah. This maneuver did improve the situation, turning us about 90 degrees to the right in the general direction of home base. with the right wing down about 10-15 degrees one man could keep the ship straight with the rudder. Curly and I traded off on the controls every four or five minutes. After about an hour of slow climb using emergency power settings I was becoming concerned about detonation in the engines."
It was a miracle that we had stayed airborne and escaped the target area without parachuting out or crashing. When we first started losing altitude my thoughts raced as I envisioned having to rebuild what I had just destroyed, as well as the steel bridge destroyed on February 13th which was under heavy repair work. Not knowing the conditions on the ground and the probable wrath of the Japanese, it did not occur to me that we could have been executed on the spot.
Ray Hanson clung to the navigator's table and I held to the bombsight until we leveled out. Who really knew if we circled the target in a wide arc one and a half times or more before the pilots got the aircraft under control? Did we fall two thousand or four thousand feet? In later years we had differences of opinion.
Apparently the people on the ground, friend or foe, had no idea of our plight. Many years later, Mr. Boon Pong, the Thai operator at the canteen at the Tamarakan POW compound, told me that he thought we were circling to take pictures. During that interview Boon Pong (without my mentioning a flak suppression airplane) stated that shortly after the bridge destruction impact many small bombs hit between the bridges and Kanchanaburi.
As we cleared the hills to the west, tensions eased. We turned the emergency IFF (Identification Friend or Foe) on and hoped the signal would reach friendly territory. (It did. We later learned that we were tracked right into the eventual crash site.) Then we discussed what direction we should take to reach friendly territory. We had been briefed many times on supplies hidden underground on the Andaman Islands. We also knew that our ground forces were moving rapidly toward Rangoon. Still we wondered just how long we could stay airborne. Ditching at sea or making the Andaman Islands appeared to be a better choice than fighting the jungle or possible single wounded aircraft interception around Rangoon. So Hanson gave us a heading out to the sea.
As we flew out to sea toward the Andaman Islands, we further evaluated the aircraft damage. The auto pilot, trim tabs, and use of engines and rudders was doing wonders. We had lost all but short range radios. Inspection in the bomb bay showed that the aileron cables had been severed and this was why both ailerons were in the full up position, destroying a great deal of our wing lift. Yet by holding 175 to 180 knots per hour indicated airspeed, we could stay straight and level. The excessive gas use would still allow us to make the coastline near Akyab. There, in friendly territory, we could either bail out or crash land.
Hanson gave us a new heading which would keep us over water, well south of the airfields at Rangoon. Strange as it may seem, we began to evaluate the equipment on board the aircraft. This was a new one, loaded with the latest radar equipment. Silver with a black belly, painted for night recon and mapping, it was not meant to be camouflaged. Though we did not know how to operate the radar, we were f lying it on its second or third mission since it had been assigned to the squadron. It had not been named or painted with a pretty girl on the side. Still "smelly new" and headed for destruction!
As we neared the coastline, we again discussed the merits of attempting to parachute out or crashing on a beach. Once over land, we lined up parallel to the seashore. At this time, Curly gave us our options. He and Brad were going to try to put the plane down on the beach. Anyone who wanted to bail out could do so. After getting no response for some time, Curly said, "I am getting ready to start descent." We could never determine just who it came from, but from the rear came something to the effect, "We are all going in with you ... what the hell are you waiting on?"
Curly had everyone but Bill Nations and me go to the rear of the aircraft. They then moved all loose equipment as near the tail as possible to make the plane as tail heavy as possible. Keeping the nose gear high as long as possible at these high airspeeds might prevent it from breaking off in the sand. At these high airspeeds all three landing gears were in jeopardy. I watched, standing between the pilots until just prior ~o touchdown. God, but the beach was coming up fast! Nations and I braced our backs against the bulkhead between the radio compartment and the pilots compartment. I felt a slight rise (they had avoided a sand dune) then a shudder, thump, and skid. We had touched down! But almost as suddenly as we had touched down, we were jerked to a very quick stop. I could never recall if Nations, Curly, or I went out the top escape hatch f irst or who got out last. one thing for sure, it was fast, as fire was always anticipated.
As I peered out the upper escape hatch while scrambling to get out, I noted the tail was sticking up at about a 70-degree angle and the nose section was buried to the pilots forward cockpit section. I also noted that Brad had somehow got out of the aircraft and was standing looking back at the propellers which were slowly coming to a stop because he had cut the engines. Somehow, I stepped on the buried nose gun turret plexiglass; it broke through and I cut my leg. Looking back, I saw the crew that had landed in the back jumping from the rear bottom escape hatch. With the tail so high in the air, it was a long leap!
When the pilots had pulled up slightly to miss the sand dune, the aircraft settled swiftly and the two main gears landed in some backwater. This caused the nose wheel to come down at once and break off. From touch down to stop was less than a hundred yards. Yet the aircraft did not break up and we were all safe and sound.
How did Brad get out so quickly? He went out the co-pilots side window, a near impossible feat. Yet he did it quickly enough that he was watching the engine props coast to a stop af ter he had cut the main engine switches. He had once again proven that our crew members could do the near impossible when necessity arose!
By the skill of our pilots and the grace of God, crew T-333 had survived again.
We were picked up by the British, and since our nearest airfield was Cox's Bazaar at Akyab, Burma, our squadron dispatched a Liberator to pick us up there. After a three-day "rest leave" to Lucknow, India, we were back ready to fly combat missions again.