Complex sentence: In 1977, while Singlaub was chief of staff of U.S. forces in South Korea, he publicly criticized President Jimmy Carter's decision to withdraw U.S. troops from the Korean peninsula.
Split into simpler sentences: In 1977, Singlaub was chief of staff of U.S. forces in South Korea. He was publicly critical of President Jimmy Carter's decision to withdraw U.S. troops from the Korean peninsula.