On Wednesday 23 May 2018, at Noi Bay International Airport, Hanoi, the Governor-General, His Excellency General the Honourable Sir Peter Cosgrove AK MC (Retd), and Lady Cosgrove, were welcomed to the Socialist Republic of Vietnam by His Excellency Mr Craig Chittick, Ambassador to Socialist Republic of Vietnam, and Mr Mai Phouc Dung, Chief of Protocol, Vietnam Ministry of Foreign Affairs.

Afterwards, the Governor-General and Lady Cosgrove received a briefing from Mr Chittick.

On Monday 21 May 2018, the Governor-General, His Excellency General the Honourable Sir Peter Cosgrove AK MC (Retd), and Lady Cosgrove, hosted morning tea at Government House, Canberra, for the launch of National Palliative Care Week.

Afterwards, the Governor-General, as patron of Scouts Australia, and Lady Cosgrove, conducted an Investiture ceremony for the Chief Commissioner.

Earlier, the Governor-General participated in a video call with students from Pius X Catholic Primary School, WA, as part of their civics and citizenship class.

On Saturday 19 May 2018, the Governor-General, His Excellency General the Honourable Sir Peter Cosgrove AK MC (Retd), and Lady Cosgrove, met with members of the public during the 2018 Admiralty House Open Day.

In the evening, Their Excellencies attended a rugby union match between the Waratahs and Highlanders, as guests of Mr Roger Davis, Chairman, NSW Rugby Union, at Allianz Stadium, Moore Park.

On Friday 18 May 2018, the Governor-General, His Excellency General the Honourable Sir Peter Cosgrove AK MC (Retd), and Lady Cosgrove, attended a dinner hosted by the High Commissioner of Canada, His Excellency Vice-Admiral Paul Maddison RCN (Retd) CMM MSM, at the Official Residence of Canada.

On Thursday 17 May 2018, the Governor-General, His Excellency General the Honourable Sir Peter Cosgrove AK MC (Retd), and Lady Cosgrove, hosted a lunch for the Australian Bravery Decorations Council at Government House. Guests included: Ms Fiona Birkett MVO, Dr Penelope Flett AO, Ms Libby Gregoric, Ms Teresa Hart PSM, Wing Commander Nick Hobson DFC AFC (Retd), Mr Robert Kennedy, Commissioner Dominic Lane AFSM, Mr Gerard Martin, Mr Jeremi Moule, Superintendent Sean Parnell OAM, Ms Carolyn Sladden, and Mr John Trevillian AM.

On Wednesday 16 May 2018, the Governor-General, His Excellency General the Honourable Sir Peter Cosgrove AK MC (Retd), as Commander-in-Chief, and Lady Cosgrove, attended a parade at Lavarack Barracks, Townsville, to commemorate the 50th anniversary of the Battle of Coral. At the parade, the Governor-General presented the new Regimental Colours to 1st Battalion, Royal Australian Regiment, and affixed a Unit Gallantry Citation streamer in recognition of the unit’s actions during the Battle of Coral in the Vietnam War.

On Tuesday 15 May 2018, the Governor-General, His Excellency General the Honourable Sir Peter Cosgrove AK MC (Retd), and Lady Cosgrove, visited the Great Barrier Reef on the research vessel ‘Tamora’, as guests of Director, Great Barrier Reef Marine Park Authority, Dr Russell Reichelt.

Afterwards, the Governor-General, and Lady Cosgrove, attended a post Cyclone Debbie briefing from Mr Matthew Boileau of Hamilton Island Enterprises at the Hamilton Island Marina, and met with members of the local community.

On Friday 11 May 2018, the Governor-General, His Excellency General the Honourable Sir Peter Cosgrove AK MC (Retd), and Lady Cosgrove, attended the Australian American Association’s Battle of the Coral Sea commemorative service at Blamey Square, Campbell. Their Excellencies attended as guests of President, Australian American Association Canberra, Mr Robert Sroczynski, and laid a wreath during the service.

On Thursday 10 May 2018, the Governor-General, His Excellency General the Honourable Sir Peter Cosgrove AK MC (Retd) presided at a meeting of the Federal Executive Council.

Afterwards, the Governor-General received Ambassador John Berry, President, American Australian Association, and former United States Ambassador to Australia.

Then, the Governor-General and Lady Cosgrove hosted a lunch for Service Warrant Officers of the Navy, Army and Air Force at Government House.

On Wednesday 9 May 2018, the Governor-General, His Excellency General the Honourable Sir Peter Cosgrove AK MC (Retd), and Lady Cosgrove, attended the 30th anniversary of the opening of Parliament House as guests of the the Speaker of the House of Representatives, the Honourable Tony Smith MP, and the President of the Senate, Senator the Honourable Scott Ryan.