The Duke and Duchess of Cambridge are heading to Mons Barracks in Aldershot today for the annual St. Patrick's Day parade.
While visiting the 1st Battalion Irish Guards, Prince William will take part in the parade of 200 soldiers as colonel of the regiment.
Catherine will present the traditional sprigs of shamrocks to the officers and guardsmen - a tradition that dates back to 1901 and Queen Alexandra, the wife of King Edward VII.
The couple are expected to take a tour of the barracks including the Officers and Sergeants Mess during their visit.
More top news
President Trump has signed proposals for regulations to "ban all devices" like bump stocks, which were used in the Las Vegas shooting.
The Prime Minister has been warned that she must make a decisive choice about what kind of trade deal she wants after Brexit.
A former Save the Children boss has admitted he faced complaints about "inappropriate" behaviour during his time in charge.