Between January 31^st and February 3^rd in 1944, the Pacific campaign of WWII went into battle in the Marshall Islands with the United States launching two successful attacks against an under prepared and outnumbered Japanese side on the island of Kwajalein. Proving to be first victorious penetration of the outer regions of the Japanese Pacific sphere, this assault was a major triumphant step in the U.S. rally towards Japan. Take a look at this hard hitting short documentary courtesy of the History.com archives which features unique color images of those four fateful days…