
An F4U-1A with either VMF-112
VMF-112 was activated in San Diego in March 1942 and flew the F-2A Brewster Buffalo with a few F4Fs. They joined MAG-11 and went to Guadalcanal in September '42 with all F4Fs, then were pulled out to Espirito Santo in December to transition to the F4U-1. They were back at Henderson in May '43, Bougainville in December, and back to Guadalcanal by March, 44.
The "
observation" being: The "
Black 16" being applied at an angle underneath the canopy. Interesting yet strange. Most likely because of being in early combat it probably didn't matter much?.

An F4U-1C Corsair VF-85 "
White 42" aboard USS Shangri La 22nd Mar 1945.
The prototype F4U-1C, appeared in August 1943 and was based on an F4U-1. A total of 200 of this variant were built from July to November 1944; all were based on the F4U-1D and were built in parallel with that variant. Intended for ground-attack as well as fighter missions, the F4U-1C was similar to the F4U-1D but its six machine guns were replaced by four 20 mm (0.79 in) AN/M2 cannons with 231 rounds of ammunition per gun. The F4U-1C was introduced to combat during 1945, most notably in the Okinawa campaign. The firepower of 20 mm was highly appreciated. It was believed that the 20 mm cannon was more effective for all types of combat work than the .50 caliber machine gun. However, despite the superior firepower, many navy pilots preferred .50 caliber machine guns in air combat due to jam and freezing problems of the 20mm cannons. These problems were reduced as the ordnance crews gained experience until the performance of the guns compared favorably with the .50 caliber, but freezing problems remained at 25,000 to 30,000 ft (7,600 to 9,100 m) until gun heaters were installed.
The "
observation" being: This Corsair being an F4U-1C in flight in a combat zone over Okinawa.

An F4U-4? I'm thinking this is just after the war over Japan as that's Mt. Fuji in the background.
The "
observation" being: Is this Post-War? Most likely is, but I have no information to go on. I'd like to know what unit, date, carrier etc.

Another Corsair with no information.
The "
observation" being: Is this a Stateside F4U-1D/FG-1D?. Why the "
Black 302"? Is this a photo alteration? You'll notice on the vertical the stenciling is also black.
Too much time on my hands?