 Brazil provided the largest of these contingents, with Mexico in second place.The P-47 Thunderbolt-equipped 201st Fighter Squadron of the Fuerza Aérea Expedicionária Mexicana arrived in the Philippines in early 1945 and participated in the Luzon Campaign, as well as in subsequent operations against Formosa.Following the 8 December 1941 air attack on Clark Field and MacArthur's decision to fall back on Bataan, American forces abandoned Fort Stotsenburg.