P-40e Warhawk /Kittyhawk

The P-40E Warhawk/Kittyhawk was a versatile, rugged, and heavily armed (six .50-cal machine guns) fighter-bomber used extensively by Allied forces in every major theater of World War II from 1941 to 1945. Key theaters included the Pacific (Pearl Harbor, Philippines, Australia), China-Burma-India (Flying Tigers), North Africa/Mediterranean, and the Aleutian Islands. 
 
Major Deployment and Operational Use:
Pacific Theater (1941-1945): Engaged Japanese aircraft at Pearl Harbor and the Philippines in Dec 1941. Used extensively by U.S. Army Air Forces (USAAF), Royal Australian Air Force (RAAF), and Royal New Zealand Air Force (RNZAF) in the Southwest Pacific.
China-Burma-India (CBI) Theater: Famous for use by the American Volunteer Group ("Flying Tigers") in 1942 and later the 23rd Fighter Group.
North Africa & Mediterranean: Used by the RAF (as the Kittyhawk), USAAF (including the 99th Fighter Squadron/Tuskegee Airmen), and others for air superiority and ground support.
Eastern Front: Supplied to the Soviet Union via Lend-Lease.
Alaska/Aleutian Islands: Deployed to defend against Japanese advances in the North Pacific. 
 
The P-40E was a premier low-to-medium altitude fighter, often acting as a ground-attack aircraft later in the war due to its ability to carry bombs.