Queen Elizabeth II is back to work. On Wednesday, the 95-year-old monarch held her first public appearance since her recent health issues.During the engagement, the Queen met with General Sir Nicholas Carter, who is stepping down from his role of Chief of the Defense Staff, Buckingham Palace said.Queen Elizabeth wore a floral dress for the occasion, as she met with Carter, who was in his military uniform, at Windsor Castle.The Queen's health became a topic of conversation last month, when she canceled her trip to Northern Ireland on the advice of her doctors.«The Queen has reluctantly accepted medical advice to rest for the next few days,» a spokesman for Buckingham Palace said at the time.