Who deciphered Babylonian cuneiform using the Behistun inscription?

General Henry Seymour Rawlinson, 1st Baron Rawlinson,, known as Sir Henry Rawlinson, 2nd Baronet between 1895 and 1919, was a senior British Army officer in the First World War who commanded the Fourth Army of the British Expeditionary Force at the battles of the Somme (1916) and Amiens (1918) as well as the breaking of the Hindenburg Line (1918). He also commanded the Indian Army from 1920 until his sudden death in 1925.