At 17:00 on 6 June, the 3rd Battalion 5th Marines (3/5)—commanded by Major Benjamin S. Berry, and the 3rd Battalion 6th Marines (3/6)—commanded by Maj. Tyler M. Meyer, on their right—advanced from the west into Belleau Wood as part of the second phase of the Allied offensive. Again, the Marines had to advance through a waist-high wheat field into murderous machine gun fire. One of the most famous quotations in Marine Corps legend came during the initial step-off for the battle when Gunnery Sergeant Dan Daly, a recipient of two Medals of Honor who had served in the Philippines, Santo Domingo, Haiti, Peking and Vera Cruz, prompted his men of the 73rd Machine Gun company forward with the words: "Come on, you sons of bitches, do you want to live forever?"
The first waves of Marines—advancing in well-disciplined lines—were slaughtered; Major Berry was wounded in the forearm during the advance. On his right, the Marines of Major Meyer's 3/6 Battalion swept into the southern end of Belleau Wood and encountered heavy machine gun fire, sharpshooters and barbed wire. Marines and German infantrymen were soon engaged in heavy hand-to-hand fighting. The casualties sustained on this day were the highest in Marine Corps history to that time.