豫湘桂会战
Vincent planned and carried out daring offensive air tactics in China, forming the 14th Air Force Forward Echelon which staged out of forward airfields to attack the enemy unexpectedly. The successful concept was twinned and reorganized by Chennault into two mixed-aircraft groups, with Vincent commanding one of them, the 68th Composite Wing. A string of Allied victories throughout 1943 caused the Japanese to plan a major retaliatory move. Beginning in May 1944, the airmen were hit repeatedly and forced into retreat as the Japanese implemented Operation Ichi-Go. Vincent's men demolished their valuable airbases and fell back to Chennault's stronghold at Kunming. Vincent returned to the U.S. afterward, his tour of duty complete.