Operation Character was a Special Operations Executive (SOE) and Jedburgh operation that took place in the Burma campaign between February and September 1945 during World War II. 110 British, Indian, Gurkha and Canadian personnel of Force 136, three-man Jedburgh Teams and over a hundred men of various Burmese ethnicities, mobilized 12,000 Karen people into four regional groups to fight against the Japanese in the Karen Hills. The presuppose was to support General Bill Slim's XIV Army which was striking for Rangoon during the reconquest of Burma from the Japanese in early 1945.
Following the defeat of the Japanese at Meiktila and Mandalay in March, the Karen irregulars harried the 50,000 Japanese attempting to withdraw through the hills. SOE also directed air strikes and provided close reconnaissance of targets for the RAF. Ambushes were made against Japanese forces in the hills attempting to reinforce the front facing XIV Army. Following the capture of Rangoon, XIV Army suspended further operations, and so Japanese pressure was made against the Character teams. This however made little impression and instead the Japanese attempted to break out to the Pegu Yomas in late July but suffered heavy casualties from Karen guerrillas and SOE. Despite the war ending in August 1945, Character was still an active operation - the Japanese cut off and without communications held out until September until their surrender.
The operation as a whole proved highly effective, Character had inflicted significant casualties on Japanese forces, ably assisted XIV Army and demonstrated the success of combining SOE and local forces. It was the most successful SOE operation of the war.
Background
In Burma, the Karens were the largest of the minority communities. Many live in the Irrawaddy delta, but the majority of the Karenni live in the mountainous and heavily forested tract along the border with Siam.
Following the Japanese invasion of Burma and the allied retreat in 1942, a few British army officers had been left behind in the Karenni as part of SOE section Force 136 headed by Colin Hercules Mackenzie in a hasty attempt to organise a "stay-behind" organisation known as the 'Oriental Mission'. This force had operated in the South-East Asia region occupied by Japan had been created to encourage and supply resistance movements. During the retreat the Oriental Mission occasionally mounted clandestine sabotage operations and were successful in delaying Japanese advances.
Operation Harlington was initiated in 1943 led by SOE British liaison officer, Hugh Seagrim who had stayed behind after the retreat and were able to successfully ambush Japanese patrols with impunity. The Japanese responded by executed a ruthless punitive expedition into the Karenni in August 1944, where they knew a British officer was operating. To spare the population Seagrim, voluntarily surrendered himself to the Japanese and was executed along with several of his Karen fighters. Nevertheless, the Karen fighters continued to resist and this influenced Force 136 to further supply and support them.
By the end of 1944, XIV Army commanded Major General Bill Slim had commenced the reconquest of Burma in Operation Capital. From November 1944 Operation Extended Capital took place - Meiktila and Mandalay were recaptured by March 1945. Despite this Slim was soon aware of the problems that the monsoon would bring to his forces and he resolved to get to Rangoon much further South before mid-May in Operation Dracula.
At the same time SOE had begun Operation 'Nation' which had been designed to facilitate the defection of the 'Burma National Army' (BNA) from the Japanese to the British side. Force 136 had made contacts with BNA leader Aung San with the help of the Karens and Burmese communists. In late March 1945, the BNA paraded with the Japanese in Rangoon and marched out ostensibly to fight the British in Central Burma. Instead, on 27 March, the 7,000 men openly declared war on the Japanese. SOE also influenced the Anti-Fascist Organisation (AFO) with Operation Billet to rise up in a now country-wide rebellion.
General Heitarō Kimura the Japanese commander of Burma Area Army realising this situation believed that his forces could hold up the XIV Army before the Monsoon. Following on from the success of 'Nation', Mackenzie planned a new operation to raise the Karen levies to support Slim's advance. Major Edgar Peacock was chosen to "train, plan and lead the Karens into their first action and show them how to do it." Peacock had worked as a Forestry Officer in Burma before the war, which included lengthy tours in the jungle and so knew the various tribes including the Karenni. He had successfully led P-Force in the Chindwin from 1943 before being pulled out due to the Japanese Operation U-Go offensive in March 1944.
SOE would be joined by the Jedburgh teams who had served in North West Europe the previous year. The SOE portion were trained in Ceylon under the direction of Peacock. This was followed by the training of the Jedburghs and others, some of whom were Chindit veterans.
Plan
P Force became the nucleus for Character's specific task which were grouped into four distinct groups 'Otter', 'Walrus', 'Hyena' and 'Mongoose' in the Karen dominated hills and plains of Burma. They were to:
- To keep Fourteenth Army informed about Japanese dispositions.
- To harass the retreating enemy, when called upon to do so.
- To keep under surveillance from the Karen Hills the road and railway running south from Pyinmana to Pegu.
- To observe the road from Toungoo in the Sittaung river valley through the Karen Hills and bring in reinforcements coming through the Karen Hills to Bawlake and Loikaw.
- To be prepared to oppose Japanese reinforcements coming up from the south or Japanese forces moving down from north and central Burma.
Character involved the parachute delivery of the SOE teams but also the three-man Jedburghs into the Karenni to organise large-scale resistance. They would be facing elements of Lieutenant General Renya Mutaguchi's XV Army. With airfields secured in the recent reconquered areas in Burma - Dakota C-47 transport aircraft would be used for resupply. In addition, No. 357 Squadron RAF (Special Duties) operated out of India to fly into Burma using Westland Lysander single-engined liaison aircraft. The Lysander could be used over shorter distances and were able to land on smaller quickly cleared areas for makeshift runways.
'Character'
In late February 1945, the Character teams jumped from C-47 aircraft and after landing began to rally the local Karen people. Two RAF Squadrons from Jessore and Comilla flew in further supplies, weapons and officer reinforcements. By the end of February sixty teams had parachuted into the mountains and within a month they had established a sophisticated intelligence network across nearly 7,000 square miles of jungle-covered mountains. Most of the team were British, but did include Indians, Gurkhas and eight Canadians. The 'Character' force was to only attack when ordered to do so in order to coincide with Slim's XIV Army's strike for Rangoon.
Walrus, Hyena, Otter and Mongoose
'Walrus', commanded by Tulloch, was the northernmost, its area lying north of the Mawchi road between Bawlake and Loikaw. They had jumped on 19 March with nineteen men, two majors, a second Lieutenant, three sergeants and some fourteen men from the Burma Sappers and Miners. Another drop zone had been established a few miles south of Loikaw. Tulloch soon gained the confidence of the local chiefs, and by 13 April Tulloch's Northern group had some 2,000 guerrillas. They were ordered to block Japanese movements along the Loikaw-Mwachi road.
'Otter', commanded by Peacock, was responsible for both sides of the Mawchi road from the foot-hills near Toungoo to Bawlake. Peacock was joined by Lieutenant Cromarty and Major Turrall. A new area 'Ferret' was to be established in the Northern sector at Hoya, north of the Tongou-Mwachi road and South West of Loikwa. Commanded by Major William Eustace Poles, they arrived at their allotted location, but McKenzie however changed his mind and ordered him to join Peacock at 'Otter', and Poles was to remain under Peacock's command.
'Walrus' and 'Otter' saw most of the action in the early stages. The Japanese soon had learnt of SOE's establishment at 'Otter's base on the top of the 7,500ft peak Mount Sosiso. This stronghold overlooked the Mandalay-Rangoon Road and was attacked in March, by a Japanese Company some 180 men. After two days of failed attacks the Japanese withdrew after suffering heavy casualties, Peacock's force lost one dead and five injured. Otter therefore had to limit itself to hit and run tactics for a while.
'Hyena', commanded first by Turrall and then by Lieutenant-Colonel H. W. Howell (formerly with the Kailan Mining Administration in China), operated round Pyagawpu. The Japanese became aware of the parachute drops and sent out patrols to investigate. After interrogating villagers many of the Karens then hid their women and livestock in the jungle before the Japanese arrived. Turrall arranged for the group to establish a base on Mount Plakho. A makeshift runway strip was constructed at Lipyeki village for Lysander aircraft to land and take off with ease.
'Mongoose', the last area to be formed, operated in the Papun-Shwegyin-Bilin area. Its headquarters was at Papuan was commanded by Lieutenant-Colonel R. A. Critchley, a regular soldier who had served in the East African Campaign with Reginald Wingate.
Race to Toungoo
On April 13, Slim's force began their advance in the plains heading for Rangoon. They sent word to the Character team that the Japanese 15th Division were being sent down from the Shan States. There was now a race for Toungoo by the British and Japanese. The SOE and Karen forces of 'Otter' and 'Walrus' launched devastating ambushes on this road to Toungoo, destroying truckloads of infantry, blowing up bridges and laying booby traps, creating havoc amongst the Japanese. Turrall with the 'Hyena' group meanwhile had learned that the town of Kyuakkyi in the Sittaung valley had a large Kempeitai headquarters. On April 15, Turrall launched an attack on the town which was a success, killing some forty Japanese and rescuing a number of Karens. After briefly occupying the town Turrall withdrew - he was slightly wounded along with a small number of Karens killed and wounded. The success of the attack brought in more Karen volunteers.
The Character teams had successfully delayed the Japanese by seven days who never reached Toungoo. On April 23, British IV Corps reached the town three days ahead of schedule. The Japanese now had to regroup and block the Allied advance on Rangoon. However, the monsoon had started earlier than expected which hampered further operations, and air power was grounded. Character too was impeded and limited patrols were conducted. Conditions by the end of April had cleared and the No. 221 Group RAF were able to strike on targets pinpointed by the Character teams. One of the most notable was the attack on the Rangoon-Mandalay railway station at Pyu where a Japanese troop train had just come in. Hurricane and Spitfire fighter bombers attacked in waves causing considerable damage, inflicting some 1,000 Japanese casualties.
Rangoon was captured on 3 May by an amphibious and airborne assault in Operation Dracula, with little resistance as the Japanese had retreated several days later. The Japanese were forced to retreat along the Mandalay-Rangoon road to move from the hills into the plains and therefore closer to the Character teams. Karen resistance fighters continued to harass Japanese units and stragglers. The severely reduced Japanese Burma Area Army nevertheless remained in control of Tenasserim province in Central Burma.
Japanese pressure
XIV Army was not able to support Character further as plans were drawn up for the latter's withdrawal. This was in preparation for Operation Zipper, the planned invasion of Malaya by amphibious assault, which was due to take place in mid to late August. This formation was now being transferred over to the newly formed Twelfth Army led by Lieutenant-General Sir Montagu Stopford. A further issue arose in May as a shortage of supply-dropping aircraft and the poor conditions to fly during the monsoon threatened Character's survival. By this time some 12,000 guerrillas had been activated multiplying the supplies needed. This frustrated Peacock, Tulloch and the other area commanders.
The Japanese realising that XIV Army were not going to advance any further took advantage of the situation. They were able to regroup at Mawchi and brought in reinforcements from Moulmain. They made a concerted effort against Mongoose with some 1,500 to 2,000 troops hunting them but the Mongoose team held firm. To the east of Hyena near the Salween River the group under Major Roy Wilson found it difficult against the numbers of Japanese troops moving through the area. Despite a number of successful number of ambushes against the Japanese, his group was dispersed by aggressive Japanese tactics and so had to hide deeper in the jungle. The Japanese then attacked and raised a number of villages bringing in an influx of refugees to the Hyena headquarters. Nevertheless, Wilson was able to regroup at Daurakhu in June and casualties were few.
The Japanese also made a push to remove the Otter team from Sosiso in June. This time they used Karen levies to guide them, and captured a number of outposts causing the loss of Sergeant Charlesworth - a blow to the SOE. The Japanese however were driven back and the outposts were retaken.