Troops of the Irish Guards receive their shamrock. A tradition on St Patrick's Day.
Full title reads: "Aldershot. On St. Patrick's Day. in the morning - every officer and man of the Irish Guards receives his spring of Ireland's emblem - 'that comes from the hills and the vales and the mirelands'."
Soldiers of the Irish Guards regiment are presented with shamrocks by a woman, presumably the Princess Royal, Princess Mary. The shamrock is handed out to the troops standing in their bearskins / hats.
LS of troops giving three cheers for the Princess Royal. Shots of the troops marching past lead by a pipe and drum band.