M69 napalm incendiary bomb, that were used in bombing of Nagaoka in 1945. Exhibit at Niigata Prefectural Museum of History. The M69 incendiary bomblet was used in air raids on Japan and China during World War II, including the firebombing of Tokyo in 1945.

Once over the capital, wave after wave of B-29s emptied their incendiary payloads into “Target Zone 1”—an area that corresponds almost perfectly to the flammable, built up regions highlighted in previous planning documents. The effects were devastating.

美军在1945年2月23日至24日第一次对东京采取大规模燃烧弹攻势，当晚174架B-29轰炸机在东京抛下大量凝固汽油弹（Napalm），把东京约2.56平方公里的地方焚毁。

2025年3月9日 · Flying at altitudes of 5,000 to 7,000 feet (1,524–2,134 meters), the B-29s dropped their 7-ton bomb loads. As the cluster bombs fell they broke apart and the 38 6-pound (2.7 kilogram) AN-M69 bomblets in each cluster spread. These were filled with napalm and ignited by a white phosphorous charge.

The bomb used napalm (jelled gasoline) as an incendiary filler, improving on earlier designs which used thermite or magnesium fillers that burnt more intensely but were less energy/weight effective and easier to put out. [3] In Germany they were filled with jellied oil and dropped in clusters of 36 in the non-aerodynamic M-19 bomb. [4]

Once over the capital, wave after wave of B-29s emptied their incendiary payloads into “Target Zone 1”—an area that corresponds almost perfectly to the flammable, built up regions highlighted in previous planning documents. The effects were devastating.

美军轰炸日本的燃烧弹类型主要是m47、m50和m69式。 其中M47和M50都是单枚炸弹内部填充燃烧物质，M69则是采用集束炸弹的方式，轰炸机释放后在半空中爆炸，形成“烈焰瀑布”。

M69 napalm incendiary bomb, that were used in bombing of Nagaoka in 1945. Exhibit at Niigata Prefectural Museum of History. The bomblet used napalm as an incendiary filler, improving on earlier designs which used thermite or magnesium fillers that burned more intensely, but were less energy- and weight-efficient, and were easier to extinguish. [4]

The M69 sprays napalm jerry before or after landing by five second delay fuse and TNT. Napalm can be dispersed to the area of 100ft * 100ft. Sticking to buildings and people's clothes, the napalm gets fire by Magnesium, and then burn everything.

The M-69 incendiary cluster bomb was used to target Japanese cities during World War II. They were nicknamed 'Tokyo Calling Cards'.[1] The bomb used napalm as an incendiary filler, improving on earlier designs which used thermite or magnesium fillers …