OrdnanceType 99 No. 25Type 99 No. 25Type 99 No. 25KindBombMass249 kgService193119321933193419351936193719381939194019411942194319441945Japan · Pacific≈ 7 Dec 1941 – 26 Oct 1942Japan · Southeast Asia≈ 5 Apr 1942 – 9 Apr 1942Aircraft 2193119321933193419351936193719381939194019411942194319441945D3A1 Model 11≈ Nov 1939 – Sep 1941≈ 7 Dec 1941 – Oct 1942≈ 1 Mar 1942 – 9 Apr 1942D3A2 Model 22≈ Oct 1942 – Jun 1945