Finally, the two battles for Kwajalein Atoll proved incontestably the effectiveness of prolonged and massive preinvasion naval gunfire and aerial bombing. The U.S. planes and warships had so thoroughly scoured not only the target islands, but also the other Japanese air bases in the Marshalls, that not a single Japanese plane was able to attack the American surface forces in the campaign. [Illustration: Department of Defense Photo (USMC) 70200 _Resolute and fanatic Japanese defenders who were not previously killed by the Marines very often committed hara-kiri, as did the two soldiers in the foreground._] _The Final Attack: Eniwetok_ With Kwajalein Atoll now in American hands, a review of the next operation immediately took place. Admiral Nimitz flew there from Pearl Harbor and met with his top commanders. The 2d Marine Division, tempered in the fires of Tarawa, had earlier been alerted to prepare for a May attack on Eniwetok Atoll, 330 miles northwest of Kwajalein. The planners decided to use instead the 22d Marines (under the command of Colonel John T. Walker) and two battalions of the Army’s 106th Infantry Regiment, since they had not been needed in the quick conquest of Roi-Namur and Kwajalein. In addition, the date for the attack was jumped forward to mid-February. The softening-up process had begun at the end of January, and the carrier air strikes increased the following month. Japanese soldiers caught in this deluge were dismayed. One wrote in his diary, “The American attacks are becoming more furious. Planes come over day after day. Can we stand up under the strain?” Another noted that “some soldiers have gone out of their minds.” On D-Day, 17 February, the Navy’s heavy guns joined in with a thunderous shelling. Then, using secret Japanese navigation charts captured at Kwajalein, the task force moved into the huge lagoon, 17 by 21 miles in size. Brigadier General Thomas E. Watson, the Marine in overall command of some 10,000 assault troops, had the responsibility for conducting a complex series of successive maneuvers. As at Kwajalein Atoll, the artillery was sent ashore on D-Day on two tiny islets adjacent to the first key target, Engebi Island. The Marines’ 2d Separate [75mm] Pack Howitzer Battalion went to one islet, and the Army’s 104th Field Artillery Battalion went to the other. There they set up to provide supporting fire for the forthcoming infantry assault. [Illustration: _Men of the 17th Infantry Regiment go in by amtrac to occupy one of the islets adjacent to Kwajalein itself in preparation for the main landing the next day._ Department of Defense Photo (Army) 187435 ] The landing on Engebi came the next morning, D plus 1, 18 February, as the 1st and 2d Battalions of the 22d Marines headed for the beach in their amtracs. At this time there occurred “one of those pathetic episodes incident to the horrible waste of war.” As one Marine report described it: