Commas

Q. I have been debating with my copyeditor guidelines concerning commas and dates. We consulted 6.45 on the topic but we still differ in opinion. I prefer “In the summer of 1812 General Hagerthy moved his troops” versus “In the summer of 1812, General Hagerthy moved his troops.” “Early in 1946 an opportunity came for my cousin” versus “Early in 1946, an opportunity came for my cousin.” I argue that a comma after the year is not needed. Gurus of style, please opine who is correct.

A. Rejoice: everyone is correct. Higher authorities are not interested in legislating commas to this degree. Peace.