In 1913 de la Bere joined the Regular Army and was commissioned as a Second lieutenant into the Dorsetshire Regiment. During World War I he served two spells of duty in France and Belgium in 1914–15 and 1915–16, including a period attached to the Connaught Rangers, and was wounded. In 1916 he was seconded in the rank of Captain to the Royal Flying Corps. In January 1918 de la Bere received a special staff appointment as a Conducting Officer in France, escorting visitors to the armies, and became an Assistant Press Officer in May 1918, retaining that appointment in the British Army of the Rhine after the Armistice with Germany. De la Bere then spent a number of years in staff positions in the War Office, receiving promotion to Major in 1931. In 1935 he returned to regimental duty in command of the Dorsets' regimental depot. Then in 1939 he was promoted to Lieutenant colonel and took command of the 1st Battalion Dorsets. On the outbreak of World War II they were stationed in Malta. The Siege of Malta began on 11 June 1940 following Italy's entry into the war. The island was dependent on supply convoys fighting their way through from Gibraltar or Alexandria, and meanwhile, the garrison and people were subjected to some of the heaviest bombing of the war for a period of over two years. For its part, the island provided a base for air and sea attacks on supply convoys to the Italian and German forces fighting in North Africa. On 27 July 1941 de la Bere, by now a Colonel, was placed in command of a new Central Infantry Brigade, formed by a brigade headquarters that had come out from the United Kingdom and by infantry battalions that had been brought in as reinforcements from Egypt. De la Bere was injured in November 1941, but returned to duty within three weeks, and commanded the brigade until the end of the war, ending as an Acting Major-General. Central Brigade was redesignated 3rd Infantry Brigade in 1942 and later became 233rd Infantry Brigade. During the siege de la Bere organised gifts and activities to maintain the morale of the civil population.
Later career
De la Bere retired from the army with the rank of Brigadier after World War II and in 1948 was appointed Secretary-General of the Central Chancery of the Orders of Knighthood, an office within the Royal Household at St James's Palace responsible for administering a large part of the British Honours system. He was the author of The Queen's Orders of Chivalry. He retired in 1960 and the following year was appointed an Extra Gentleman Usher to the Queen, a post that he held until his death.
Family
In 1923 de la Bere married Marjorie Minton, daughter of N. A. Minton Haines. They had a daughter who predeceased him. De la Bere died on 27 December 1970.
Awards
During his life de la Bere received the following British and Foreign honours and awards:
