3,500 that in February 1942 launched a deep penetration raid, code-named Operation Longcloth, into Japanese occupied Burma. They went in on foot and used mules to carry supplies. The operation was not a military success but was a propaganda boost for the Allies because it showed that Allied forces could successfully move and fight in jungle terrain well away from roads. On the back of the propaganda success, Orde Wingate, the eccentric commander of the Chindits, was given the resources to increase his command to divisional size and the USAAF supplied the 1st Air Commando Group to support his operations. The availability of air transport revolutionized Wingate's operational choices. In February 1944, Operation Thursday was launched, and air transport support supplied 1st Air to allow the Chindits to set up air supplied bases deep behind enemy lines from which aggressive combat patrols could be sent out to interdict Japanese supply lines and disrupt rear echelon forces. That in turn forced the Japanese 18th Division to pull frontline troops from the battle against X Force, which was advancing through Northern Burma, to protect the men building the Ledo Road. When the Japanese closed on a base and got within artillery range, the base could be abandoned and then set up in another remote location. The ability to sustain the bases that relied totally on air power in the coming decades would prove a template for many similar operations. After the first Chindits expedition, thanks to the training the regular forces were receiving and the example of the Chindits and new divisional tactics, the regular units of the Fourteenth Army started to get the measure of both the jungle and the enemy. When the Japanese launched their late 1943 Arakan offensive they infiltrated Allied lines to attack the 7th Indian Infantry Division from the rear, overrunning the divisional HQ. Unlike previous occasions on which this had happened, the Allied forces stood firm against the attack and supplies were dropped to them by parachute. In the Battle of the Admin Box from 5 February to 23 February, the Japanese were unable to break through the heavily-defended perimeter of the box. The Japanese switched their attack to the central front, but again, the British fell back into defensive box of Imphal and the Kohima redoubt. In falling back to the defensive positions around Imphal, the leading British formations found their retreat cut by Japanese