A land attack aircraft, a twinengine medium bomber owned by the Imperial Japanese Navy during the Pacific War. Designed and manufactured by Mitsubishi together with the Type 96 land attack aircraft, the Type 1 Land Attack was the main attack aircraft of the Imperial Navy before Japan surrendered. In the enemy aircraft identification code of the Allied Forces, the first type of land attack was called "Betty", but once its engine or the integral fuel tank of the wing was hit, it was difficult to extinguish the fire, so the US Marine Corps ridiculed the first type of land attack as "Betty". Air lighters".