The first indication that the men cutting down cashew trees and filling in the ditch outside Quinta's house in central Guinea-Bissau were not, as they told her, evangelicals making a clearing for a Christmas Day parade came at 9 p.m. on Dec. 18, when they returned in several cars accompanied by four white men and with a truck loaded with drums of aviation fuel. At 11 p.m., 20 soldiers arrived on a second truck and divided themselves into two groups. After setting up two checkpoints 2 km apart in Quinta's village, Amedalae, the soldiers began unloading hundreds of large aluminum cooking...