President Roosevelt, long a master of public opinion, managed to keep the lid on the outcry by emphasizing the sacrifice of the troops as epitomized by the Joe Rosenthal photograph of the second Suribachi flag-raising. The photograph was already widely renowned. FDR made it the official logo of the Seventh War Bond Drive and demanded the six flag-raisers be reassigned home to enhance popular morale. Regrettably, three of the six men had already been killed in subsequent fighting in the drive north on Iwo Jima.
The Joint Chiefs of Staff looked appraisingly at Iwo Jima’s losses. No one questioned the objective; Iwo Jima was an island that categorically had to be seized if the strategic bombing campaign was ever going to be effective. The island could therefore not be bypassed or “leap-frogged.” There is considerable evidence that the Joint Chiefs considered the use of poison gas during the Iwo Jima planning phase. Neither Japan nor the United States had signed the international moratorium, there were no civilians on the island, the Americans had stockpiles of mustard gas shells in the Pacific theater. But President Roosevelt scotched these considerations quickly. America, he declared, would never make first use of poison gas. In any case, the use of poison gas on an area as relatively small as Iwo Jima, whose prevailing winds would quickly dissipate the gas fumes, became moot. This left the landing force with no option but a frontal amphibious assault against the most heavily fortified island America ever faced in the war.
Uncommon valor in a peaceful setting: this 4th Division Marine threatens the enemy even in death. His bayonet fixed and pointing in the direction of the enemy, he was killed by a sniper before he even got off the beach on D-day.
Department of Defense Photo (USMC) 109624
On the other hand, seizure of Iwo Jima provided significant strategic benefits. Symbolically, the Marines raised the flag over Mount Suribachi on the same day that General MacArthur entered Manila. The parallel capture of the Philippines and Iwo Jima, followed immediately by the invasion of Okinawa, accelerated the pace of the war, bringing it at long last to Japan’s doorstep. The three campaigns convincingly demonstrated to the Japanese high command that the Americans now had the capability—and the will—to overwhelm even the most stoutly defended islands. Kyushu and Honshu would be next.
Iwo Jima in American hands produced immediate and highly visible benefits to the strategic bombing campaign. Marines fighting on the island were reminded of this mission time and again as crippled B-29 Superforts flew in from Honshu. The capture of Iwo Jima served to increase the operating range, payload, and survival rate of the big bombers. The monthly tonnage of high explosives dropped on Imperial Japan by B-29s based in the Marianas increased eleven-fold in March alone. As early as 7 April a force of 80 P-51 Mustangs of VII Fighter Command took off from Iwo Jima to escort B-29s striking the Nakajima aircraft engine plant in Tokyo. But the Army Air Force valued Iwo Jima most of all as an emergency landing field. By war’s end, a total of 2,251 B-29s made forced landings on the island. This figure represented 24,761 flight crewmen, many of whom would have perished at sea without the availability of Iwo Jima as a safe haven. Said one B-29 pilot, “whenever I land on this island I thank God for the men who fought for it.”
General Tadamichi Kuribayashi proved to be one of the most competent field commanders the Marines ever faced. He displayed a masterful grasp of the principles of simplicity and economy of force, made maximum use of Iwo’s forbidding terrain, employed his artillery and mortars with great skill, and exercised command with an iron will virtually to the end. He was also a realist. Without hope of even temporary naval or air superiority he knew he was doomed from the start. In five weeks of unremitting pressure, the Americans breached every strongpoint, exterminated his forces, and seized the island.
Department of Defense Photo (USMC) 142434