Colonel James Lethbridge Brooke Templer (27 May 1846 – 2 January 1924) was an early British military pioneer of balloons.

[6] Whilst serving in the King's Royal Rifle Corps Templer became interested in military ballooning.

[11] The following year Captain Templer took command of the newly established military balloon department at Chatham.

Powell made a move for the rope but the balloon rose, tearing the line out of Templer's hands.

[7][14] In 1888 Templer was accused, arrested and charged with providing the Italian Government with British secrets about military ballooning.

[15] At the start of the Second Boer War (1899–1902), Templer served in the Scientific and Departmental Corps as a lieutenant colonel.

[18] After the end of the war, Templer retired from his commission in the 7th (Militia) Battalion of the King's Royal Rifle Corps in November 1902.

Work on the British Army Dirigible No 1, named Nulli Secundus ("Second to none") was not complete until 1907 by which time Templer was no longer the superintendent of the Balloon Factory, Colonel Capper having taken over in 1906.