Herbert was afflicted with eye problems which left him nearly blind from early childhood, losing all his sight towards the end of his life.
Aubrey Herbert was educated at Eton College and Balliol College, Oxford University, where he obtained a first class degree in modern history. He was famous for climbing the roofs of the university buildings, despite his near blindness. He numbered among his friends Adrian Carton De Wiart, Raymond Asquith, John Buchan and Hilaire Belloc. Reginald Farrer remained close throughout his life.
His friendship with Middle Eastern traveller and advisor, Sir Mark Sykes dates from his entry into parliament in 1911 when, with George Lloyd, they were the three youngest Conservative MP's. They shared an interest in foreign policy and worked closely together in the Arab Bureau (1916).
Although not included in the collections of his letters (David Garnett, Malcolm Brown) T. E. Lawrence's correspondence with Aubrey Herbert quoted by Margaret Fitzherbert in the biography of her grandfather The Man Who Was Greenmantle bears witness to their close friendship.
He was a half brother to the famous Egyptologist, George Herbert, 5th Earl of Carnarvon who discovered King Tutankhamen's tomb.
A renowned traveller, especially in the Middle East, his trips include voyages through Japan, Yemen, Anatolia and Albania. During the period 1902-04 he was an honorary attache in Tokyo, then in Constantinople during 1904-05. He was much more interested in the Middle East than in the Far East.
Herbert often dressed as a tramp on his travels.
He was twice offered the throne of Albania. On the first occasion, just before World War I, he was interested, but was dissuaded by the then prime minister, Herbert Asquith, a family friend. The offer remained unofficial and rejected by the Foreign Office. The Albanian crown went to William of Wied.
A second time the crown was offered after the defeat of the Italian Army by the Abanians in September 1920. Again the offer was unofficial though on behalf of the Albanian government. Aubrey Herbert discussed the offer with Philip Kerr and Maurice Hankey pursuing the idea of perhaps acting under the banner of the League of Nations; Eric Drummond a friend of Aubrey had become its first Secretary General. Aubrey's subsequent lobbying led to the acceptance of Albania as a member in the League of Nations in December 1920. With a change of Foreign Minister in the Albanian government Aubrey's chance of a crown greatly diminished. The crown was then (April 1921), still more unofficially, offered to the Duke of Atholl by Jim Barnes of the British Friends of Albania residing in Italy.
The National Library of Albania in Tirana was once named after Herbert as was a village in the country.
During the Battle of Mons he was wounded, taken prisoner, and escaped.
After a convalescence in England and unable to rejoin due to his occular disability, Aubrey was proposed for service in military intelligence in Caïro by Kitchener's military secretary Oswald FitzGerald via Mark Sykes. He was attached to the Intelligence Bureau in Caïro under Colonel Clayton in January 1915. In mid-February he was sent on an intelligence gathering mission in the Eastern Mediterranean aboard the cruiser Bachante . When the Gallipoli Campaign started General Alexander Godley, formerly of the Irish Guards and second in command to General Birdwood of the Australian and New Zealand Army Corps, now commanding the New Zealanders, offered him an appointment as Liaison Officer and Interpreter on the General's staff. His pre-war contacts (a.o.Rıza Tevfik Bölükbaşı) and Turkish speaking ability were to prove useful. He became famous for arranging a truce of eight hours, on Whit Monday, 24 May, with the Turkish commander Mustafa Kemal to bury the dead. He appears, as the 'Honourable Herbert' in Louis de Bernieres's novel Birds Without Wings, where he is seen by a narrating character during the truce. In Eastern Mediterranean Intelligence he worked together with Compton Mackenzie.
In October 1915, on sick leave in England, Herbert carried with him a memorandum from the Arab Bureau from Colonel Clayton to the Foreign Office explaining the situation in the Middle East. In November, the memorandum, at first favourably received, became obsolete after the visit of François Georges-Picot and his subsequent negotiations with Mark Sykes. It would appear that the Arab Bureau however continued working along the lines of the memorandum which led to contrary promises resulting in accusations of bad faith.
In November 1915 Aubrey was in Paris and Rome on a secret mission related to Albania. Following the plan to evacuate Anzac beginning in December he volunteered to return to Anzac to stay with the rear guard convinced that his knowledge of language and his network of acquaintances would greatly benefit that body if captured. The successful evacuation of Anzac and Suvla Bay on the 20th December and the good prospects for Cape Helles countered his proposal.
Impatient with the indecision of the Foreign Office over Albania, Herbert at the start of 1916 went prospecting for new opportunities. Admiral Sir Rosslyn Wemyss proposed for him a job as Captain in Intelligence. When in February the War Office cleared him from involvement in Albania, he took up the offer and found himself in charge of Naval intelligence in Mesopotamia and the Gulf.
Following the critical situation of British troops at Kut-al-Amara the War Office instructed to offer General Townshend the use of Aubrey Herbert to negotiate terms with the Turks. T. E. Lawrence was sent on behalf of the Arab Bureau while Colonel Beach acted for Intelligence of the Indian Expeditionary Force. Together they were to oversee the exchange of prisoners and wounded, and eventually to offer the commander Khalil Pasha up to ₤ 2 million for the relief of Kut. The offer was rejected by Enver Pasha, and the evacuation of the wounded severely hampered through lack of transport.
The situation at Kut led Aubrey to send a telegram to Austen Chamberlain, Secretary of State for India, with support of General Lake but still in breach of army regulations, condemning the incompetence in handling the Mesopotamian campaign. The Government of India ordered a court martial. The War Office refused. Admiral Wemyss, who travelled to Simla for the purpose, supported him throughout.
Back in England in July 1916 Aubrey Herbert started asking (12 July) in the House of Commons for a Royal Commission to inquire into the conduct of the Mesopotamian campaign. He opposed the routine evasiveness of the Prime Minister, Mr Asquith (a close friend), by speaking in the House four times on Mesopotamia. A Special Commission Mesopotamia was subsequently appointed. Aubrey's critics saw in his obstinacy a personal vendetta against Sir Beauchamp Duff, the Commander-in-Chief in India, and Sir William Meyer, the Financial Secretary.
In October 1916 Aubrey Herbert was to serve as a liaison officer with the Italian army whose frontline lay in Albania. It seems that he was unaware of the clause partitioning Albania signed with Italy in the secret Treaty of London on 26th April 1915. When the Bolsheviks published the secret provisions in 1917 he rejected the idea of Albania as merely a small Moslim state, the fiefdom he believed of Essad Pasha. In December he was back in England.
In December 1916 also he learned about the death of his cousin Bron, the son of his (pacifist) uncle Auberon Herbert, to whom he had felt closest. From that date Aubrey was to consistently support the idea of negotiated peace.
1917 saw him working, under General MacDonogh, the Director of Military Intelligence, on plans of a separate peace with Turkey. On 16 July he was conducting a series of meetings with Turks in Geneva, Interlaken and Bern, among them a (secret) representative of an influential anti-Enver group. Let us note that Mustafa Kemal, who Aubrey knew from Gallipoli, had fallen out with Enver Pasha over the way -by personal order of the Sultan- his command over the Seventh Army opposite Allenby in Syria had been bestowed on him on the 5th of July (he had been a Staff Captain with the Fifth Army in Damascus in 1905). Aubrey took his notes to the Inter-Allied Conference in Paris. In a memorandum for the Foreign Office he said "If we get the luggage it does not matter very much if the Turks get the labels. When Lord Kitchener was all powerful in Egypt his secretary was wearing a fez. Mesopotamia and Palestine are worth a fez.
In November 1917 Aubrey Herbert was again sent to Italy under orders of General Macdonogh. Now he was in charge of the British Adriatic Mission, with Samuel Hoare coordinating the Mission's special intelligence in Rome.An earlier proposal by expatriate Albanians in America, "Vatra", of raising an Albanian regiment under Aubrey's command had been renewed. The matter lay somewhat delicate with the Italians as "Vatra" became increasingly anti-Italian. On 17th July 1918 the proposal was formally approved in Boston, and the Italian Consulate accepted provided it became a unit in the Italian Army. The end of the war prevented the issue of growing into a tangle.
Herbert ended the war as head of the British mission to the Italian army in Albania with the rank of Lieutenant Colonel.
Unclear policy led to nationalist criticism from Imperial bases such as Egypt (see Saad Zaghlul, 1919) at the Paris Peace Conference, 1919, nor was the resulting political handling cause for much optimism to privileged witnesses such as Aubrey, T. E. Lawrence or Gertrude Bell.
At the Conference there was a glimpse of further prospect for Aubrey Herbert when the Italian delegates proposed to assume shared responsibility over the Caucasus, an area of vital strategic importance - Baku oilfields, acces from the Nord to Mosul and Kirkuk. By May 1919, the proposal appeared to be quite empty.
By May 1919 also, the Directorate of Intelligence had changed hands, on the authority of Lord Curzon (acting Foreign Secretary while Arthur Balfour was negotiating in Paris) from Aubrey's chief General MacDonogh to Sir Basil Thomson of Scotland Yard Special Branch i.e from military to civilian in view of the Bolshevik threat on the home front. Thus it was possible for Aubrey in Februari 1921 to amaze a friend he could confide to, Lord Robert Cecil, that he was going abroad as an inspector of Scotland Yard: he went to Berlin to interview Talaat Pasha for intelligence.
Aubrey and Mary Herbert had four children, one of whom, Laura, married the novelist Evelyn Waugh.
Herbert's mother gave him both a country estate at Pixton Park in Somerset, England with 5,000 acres (20 km²) of land and a substantial villa on the Gulf of Genoa at Portofino. His son, Auberon Herbert, inherited both properties.
Herbert's mother-in-law gave the family a fine house in London.
Herbert was a slim man of more than average height and contemporaries described him as having perfect manners.
Towards the end of his life, Herbert became totally blind. He was given very bad advice to the effect that having all his teeth extracted would restore his sight. The dental operation resulted in blood poisoning from which he died in London on 26 September, 1923.
Herbert's estate was probated in 1924 at 49,970 pounds sterling.
The cameo character of the 'Honourable Herbert' in Louis de Bernieres's novel Birds Without Wings is clearly based on Herbert. He appears as a British liaison officer with the ANZAC troops serving in the Galipoli campaign. A polyglot officer able to communicate with both sides, he arranges the burial of the dead of both sides, achieving great popularity with both sides - a description that mirrors his role in the 1915 truce.