29th Engineering Battalion (1917 – 2007), known as the Wayfinders, are a unit of the U.S. Army Corps of Engineers tasked with topographic surveying. Formed during World War I, the 29th Engineering Regiment (later Battalion) conducted surveying for the proposed Nicaragua Canal. In the mid-20th century, when the U.S. military was producing maps at a tremendous pace, it was involved with the great undertaking of mapping the world's potential and real battlefields. The Battalion was distinct from but closely related to the Army Map Service and the U.S. Geological Survey.