21. Cholera broke out both among the allied landing force and on the warships. 22. The Swedish landing forces commanded by Major General Eberhard von Vegesack. 23. During the operation, enemy aircraft could be seen attacking the main landing force . 24. This ended the Japanese warship threat to the Allied landing forces at Bougainville. 25. On 6 September the offensive reached the main camp of the Japanese landing force . 26. The 100-strong landing force quickly disembarked and occupied the town. 27. Kuribayashi had switched Japanese tactics of firing on the landing force from the outset. 28. Of the seaborne Brigade landing force of 1297 and 177 paratroopers-114 would die fighting. 29. The emergency landing forced the airport to close for the rest of the day. 30. The base also hosted a major portion of the Japanese Special Naval Landing Forces .