Downed Mitsubishi A6M near Ngaremediu Reef at the southeast of Koror. This was the most popular Japanese fighter of the war. Fast and highly maneuvrable but the armor was it's weak point. This issue was common for the Japanese aircraft of WW2. The straight position of the visible propeller blade indicates that propeller was not rotating when the aircraft crashed.
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Mitsubishi A6M5 Zeke (Zero).

Japanese Navy Type 93 or Japanese Army Type Ho twin 13mm heavy machine gun, seen in US Technical Manual TM-E 30-480: Handbook on Japanese Military .

The Hotchkiss 13.2-millimeter heavy machine guns, which were designed for anti-aircraft applications, became available in the late 1920s, seeing service with the French Army and the French Navy. They had a effective ceiling of 3,980 meters and a maximum ceiling of 4,500 meters; when used against ground targets, the range was 6,000 meters. In 1930, the French Air Force also adopted the weapon (under the designation of mitrailleuse de 13,2 mm CA mle 1930) for airfield defense. Abroad, the Spanish Navy acquired many examples in Dec 1935, equipping several destroyers and cruisers. In Japan, the Japanese Navy adopted this design as the Type 93 13-millimeter heavy machine gun while the Japanese Army used the designation Type Ho.


Japanese Navy Type 93 or Japanese Army Type Ho

Experimental fighter Kyushu "Shinden" Speed 750 km/h, Canard type forward ailerons, 2,130 hp Mitsubishi MK9D (Ha-43) super charged radial engine, 4 x 30mm cannons. Two prototypes were built and only one flew during 45 min but was a succesful flight. It was an advanced fighter.