He trained on twin-engine aircraft in Saskatchewan[5] at RCAF Station Saskatoon, the present-day John G. Diefenbaker International Airport in Canada.

Over the Netherlands,[7] his aircraft was damaged by flak which knocked out all communications, so it turned back to land in Lincolnshire, still carrying its mine.

[9] Munro took part in Operation Taxable in conjunction with the D Day landings in Normandy in which the Lancasters flew precise, elongated circuits dropping Window (aluminium strips),[10] to convince German radar installations that a huge flotilla of ships was approaching Cap d'Antifer.

Munro described the operation in his logbook as: The creation of a tactical surprise to support the landing of troops on the opening of the second front.

Involved flying within at least nine miles of the enemy coast without fighter cover, and in conditions of bright moonlight and at a height of not more than 3000 ft (three thousand) at which the aircraft was open to attack by the deadliest of all weapons – light flak.

[15] Munro attended the 60th Anniversary commemoration of the Dambusters raid, along with the Queen and the Duke of Edinburgh in May 2003 at RAF Lossiemouth.

[16] He was also present, along with Richard Todd, the actor who played Wing Commander Guy Gibson in the 1955 The Dam Busters film, for the 65th anniversary commemoration held at Derwent Reservoir (Derbyshire) on 16 May 2008.

As the last living pilot of the strike team, Munro joined the production crew in Masterton as technical adviser on a remake of the film.

Munro's signature was appended to two sets of souvenir first day covers issued in Britain to commemorate the 65th anniversary of Operation Chastise.

In March 2015, Munro intended to sell his war medals and flight logbook at auction to raise funds for the upkeep of the RAF Bomber Command Memorial in London.

[21] The Dambusters pilot withdrew his war medals from auction, and agreed to give them to a museum in exchange for philanthropist's donations.

Les Munro accepted the offer of British philanthropist Lord Ashcroft to donate $150,000 to assist in the upkeep of the Bomber Command Memorial in London and gave the medals to Auckland's Museum of Transport and Technology (MOTAT).

Andrew Howard Barnes also set up a fund and donated an initial $30,000 to help preserve the historical legacy of Bomber Command in New Zealand.