The Battle of Pakokku and Irrawaddy River operations were a series of battles fought between the British Indian Army and the Imperial Japanese Army and allied forces over the successful Allied Burma campaign on the China Burma India Theater during World War II. The battles and operations were instrumental in facilitating the eventual capture of Rangoon in summer 1945.

The 33rd Division was an infantry division of the Imperial Japanese Army. Its call sign was the Bow Division . The 33rd Division was raised in Utsunomiya, Tochigi prefecture, simultaneously with 32nd, 34th, 35th, 36th and 37th Divisions. Its headquarters were initially in Sendai. It was raised from conscripts largely from the northern Kantō prefectures of Tochigi, Ibaraki and Gunma.