Executive Order 9066, signed by Franklin D. Roosevelt on February 19, 1942, authorized military commanders to designate "military areas" at their discretion, "from which any or all persons may be excluded." These "exclusion zones," unlike the "alien enemy" roundups, were applicable to anyone that an authorized military commander might choose, whether citizen or non-citizen. Eventually such zones would include parts of both the East and West Coasts, totaling about 1/3 of the country by area. Unlike the subsequent deportation and incarceration programs that would come to be applied to large numbers of Japanese Americans, detentions and restrictions directly under this Individual Exclusion Program were placed primarily on individuals of German or Italian ancestry, including American citizens.[55]
On March 2, 1942, General John DeWitt, commanding general of the Western Defense Command, publicly announced the creation of two military restricted zones.[56] Military Area No. 1 consisted of the southern half of Arizona and the western half of California, Oregon, and Washington, as well as all of California south of Los Angeles. Military Area No. 2 covered the rest of those states. DeWitt's proclamation informed Japanese Americans they would be required to leave Military Area 1, but stated that they could remain in the second restricted zone.[57] Removal from Military Area No. 1 initially occurred through "voluntary evacuation."[21] Japanese Americans were free to go anywhere outside of the exclusion zone or inside Area 2, with arrangements and costs of relocation to be borne by the individuals. The policy was short-lived; DeWitt issued another proclamation on March 27 that prohibited Japanese Americans from leaving Area 1.[56] A night-time curfew, also initiated on March 27, 1942, placed further restrictions on the movements and daily lives of Japanese Americans.[19][page needed]