In the most primitive, undeveloped, and remote areas of the Pacific Ocean, China, and Southeast Asia, the U.S. Army Corps of Engineers played a crucial role during World War II. These regions, often covered with impenetrable jungles, teeming with tropical insects and diseases, cut by swift and wide rivers, and crossed by rugged mountains, presented formidable challenges. The engineers faced the task of creating logistical facilities at the end of tenuous supply lines stretching hundreds, if not thousands, of miles back to developed bases.