Six Months for an Airfield: The Battle of Guadalcanal

Six Months for an Airfield: The Battle of Guadalcanal

On August 7, 1942, U.S. Marines landed on an island few Americans could have found on a map, to seize an airstrip the Japanese had not yet finished building. It would take six more months, six major naval battles, and thousands of lives to hold what they captured in the first few hours.

The Landing and the Airfield

The 1st Marine Division came ashore at Guadalcanal and the neighboring island of Tulagi on August 7, 1942 — the first American offensive of the Pacific War, and the first time in the conflict that the United States, rather than Japan, chose where and when to fight. The primary objective was the unfinished Japanese airstrip on Guadalcanal's north coast. Marines took it within two days, against light resistance, and renamed it Henderson Field, for a Marine aviator killed a little over two months earlier at Midway.

The landing's early success was cut short by disaster at sea. On the night of August 8–9, Japanese cruisers surprised and shattered an Allied cruiser force off Savo Island, one of the worst defeats in U.S. Navy history. The transport ships still unloading supplies for the Marines were forced to withdraw before their holds were empty, leaving the men ashore short of food, ammunition, and equipment for the weeks that followed.

Taking the airfield had proven to be the easy part. Holding it, on short supplies and against a Japanese command determined to take it back, would define the next six months.

Tenaru: The First Counterattack

Japan's response came quickly. On the night of August 20–21, roughly 900 men of Colonel Kiyonao Ichiki's detachment attempted to retake the airfield in a frontal assault across a sandbar at the mouth of the Ilu River — an engagement remembered, somewhat inaccurately, as the Battle of the Tenaru. Marine machine gunners and artillery broke the attack before dawn. Ichiki's force was nearly annihilated. It was the first clear sign that retaking Henderson Field would cost Japan far more than a single landing.

Edson's Ridge

Japan tried again in mid-September, this time in greater strength. Major General Kiyotake Kawaguchi's brigade struck a ridge south of the airfield on the nights of September 12–14, defended by Colonel Merritt Edson's Raiders and a Marine parachute battalion — fewer than a thousand men holding a line that, if it broke, would have opened Henderson Field to direct assault. The ridge held. It has been known since as Edson's Ridge, or simply Bloody Ridge.

Attrition: The Matanikau and the Sea

Through October and November, the fighting settled into a grinding contest along the Matanikau River west of the airfield, fought and refought across the same few miles of jungle. At sea, the campaign turned just as costly. The Battle of the Eastern Solomons in late August was followed by the Battle of Cape Esperance in mid-October, the Battle of the Santa Cruz Islands in late October, and the three-day Naval Battle of Guadalcanal in mid-November — action so intense that the channel north of the island, Sealark Channel, became known to the men who fought there as Ironbottom Sound, for the number of warships resting on its floor. The Naval Battle of Guadalcanal broke Japan's ability to reinforce the island in strength; a final engagement at Tassafaronga in late November inflicted heavy losses on the American cruiser force but could not reverse that outcome.

Withdrawal

By January 1943, Japanese forces on Guadalcanal were starving, outnumbered, and cut off from resupply. Rather than commit to a final battle they could not win, Japan's high command ordered a quiet evacuation. Over several nights in early February 1943, destroyers slipped in and lifted the remaining garrison off the island under cover of darkness — an operation so well concealed that American forces did not realize the island was empty until after it was over. Guadalcanal, the first Allied land campaign to force a full Japanese withdrawal, was declared secure on February 9, 1943.

A Second Life on Guadalcanal

Guadalcanal's usefulness to the war did not end with the campaign. Secured and rebuilt, the island became a staging and training ground for the operations that followed it deeper into the Pacific. In August 1944, the 1st Marine Division — the same division that had landed at Guadalcanal two years earlier — used the island's Aruligo River area to rehearse an amphibious landing ahead of its next assignment: Peleliu, that September. The training map that survives from that rehearsal, gridded and marked with landing beaches in Marine Corps green, belongs to a different chapter of the war than Henderson Field and Bloody Ridge — but it exists because of what was won on Guadalcanal in the first place.

A second surviving map reflects this same later period: a hand-drawn sketch of the island dated 1944, more than a year after the campaign's end. Its origin is unattributed, but it details the same terrain — Henderson Field, the Matanikau, the Kavo Range — that shaped the fighting years earlier, a reminder that the island's geography mattered to the military long after the battle for it was won.

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Three maps in our collection trace this island's two lives: the November 1942 intelligence map of Guadalcanal and the Florida Islands, compiled while the fighting for Henderson Field was still underway; the First Marine Division's 1944 training map of the Aruligo River, drawn up for the rehearsal that followed; and a hand-drawn sketch of the same terrain from that same later period, unattributed but detailed down to the rivers and ridgelines that gave the battle its shape. All three are available unframed or professionally framed, printed on premium archival paper.