Boeing P-26 Peashooter, Spanish and Philippine users

The Boeing P-26 Peashooter was the first all-metal American fighter and the first monoplane fighter used by the United States Army Air Corps.
It was used by many foreign users like the Republic of Spain and the Commonwealth of the Philippines.

• Republic of Spain: Twelve Boeing Model 281 were manufactured as demonstrators and one of them was sent to Spain in March 1935 with the objective of winning the contract that the Spanish government issued for a modern fighter that could replace their ageing Nieuport-Delage NiD.52. The contest was won by the Hawker Fury and the Boeing Model 281 was left unarmed in Spain at the beginning of the Spanish Civil War and bought shortly later by the Fuerza Aérea Republicana Española (FARE - Spanish Republican Air Force) for the amount of 26000 dollars. It was piloted by Lt. Ramón Puparelli and was fitted with two Vickers 0.303in machine guns. However, it was shot down by a FIAT Cr.32 on 21st October 1936 close to the town of Getafe, shortly after the beginning of the Spanish Civil War.
• Commonwealth of the Philippines: In 1937 the Philippine 3rd and 4th Pursuit Groups were created and by July 1941 they were fully equipped. After the Japanese attack on Pearl Harbor, they were reinforced with 12 more. The Filipino P-26 entered in combat when Japan invaded, and they managed to shot down some Japanese aircraft. In fact, they claimed one G3M and two or three A6M Zero before the last of the P-26 was burned by their own crew to prevent capture on 24th December 1941.

Sources:

1. https://en.wikipedia.org/wiki/Boeing_P-26_Peashooter

2. https://es.wikipedia.org/wiki/Boeing_P-26_Peashooter (translated)

3. Salamander Books - The Complete Book of Fighters