Asiatic-Pacific Theater Medal
In re your e-mail. I assume you got your info from a photograph. The above is yellow (originals and older issues are yellow-orange) with narrow stripes of blue/white/red in the center and narrow stripes of white/red/white near each end - equidistant between the center stripes and edges of the ribbon. The narrow stripes symbolize the national colors of the two major combattants - United States and Japan - in that theater of war.
The bronze campaign/service star (Aleutian Islands Campaign) merely indicates he served within an officially-designated geographic area at some time (no mimimum requirement) during the period 3 June 1942 and 24 August 1944, the time frame for the campaign. (Members of the 7th Infantry Division and attached units who participated in the assault and seizure of Attu Island are entitled to wear a bronze arrowhead on the suspension and service ribbon in addition to the bronze campaign/service star authorized for the campaign).
The shoulder sleeve insigne (shoulder patch) is a white polar bear (with details in black) on a blue disc. The star is yellow or gold (depending on the manufacturer).