I guess, SC.....The timeline fits assuming that Michael decided to wear his uniform to the wedding after being discharged.

I just wonder why he would, though. Didn't own a tuxedo, I guess.

Proud of his medals and his heroism in the service? Sure. But everyone knew he was a war hero in the first place. Wearing that uniform and reminding everyone again of a fact that they already knew seems very un-Michael-like to me.