一式陸上攻撃機 一式陸攻
The [b]Mitsubishi G4M[/b], also known as 一式陸上攻撃機 ([i]Isshiki Rikujou Kougeki-ki[/i], lit. "type 1 land-based attack aircraft") or its abbreviated name, 一式陸攻 ([i]Isshiki Rikukou[/i] or [i]Isshiki Rikkou[/i]), was a twin engined [[bomber]] for the [[Imperial Japanese Navy]] in [[World War II]].

Its Allied codename is [b]Betty[/b]. It is the successor aircraft to Mitsubishi's own [[G3M]] and the de-facto predecessor of the Yokosuka [[P1Y Ginga]] bomber.

The [[airplane]] can be easily distinguished by its [[cigar]]-shaped fuselage, hence the nickname "flying cigar", albeit also attributed to its fragility to anti-air: like the [[A6M Zero]] and the [[Ki-43 Hayabusa]], the early versions of the aircraft achieved their performance (especially range) at the expense of armor and self-sealing fuel tanks, making it vulnerable to enemy machine gun hits. This weakness is increased if the aircraft is used as a torpedo bomber due to its large size. This was what claimed [[Yamamoto Isoroku]]'s life in mid-1943 when he was shot down by US fighters in the Solomon Islands (see post #3810385).

It was designed by Honjou Kirou [本庄 季郎] and entered combat for first time in June 1941.

h4.See also
* Mitsubishi [[G3M]]
* [[List of Airplanes]]

h4. External links
* "English Wikipedia: Mitsubishi G4M":[https://en.wikipedia.org/wiki/Mitsubishi_G4M]
* "Japanese Wikipedia: Type 1 Attack Aircraft":[https://ja.wikipedia.org/wiki/%E4%B8%80%E5%BC%8F%E9%99%B8%E4%B8%8A%E6%94%BB%E6%92%83%E6%A9%9F]
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