all of which had to be hand-carried along hacked-out paths through thick jungle. At 09:30 on 18 December, as Wright's lead elements approached, Japanese defenders pinned down the Americans with machine-gun and rifle fire. Exhausted and dehydrated by their trek through the thick jungle, Wright's troops—unable to deploy quickly out of column formation—made no headway against the Japanese defenses. The next morning, after an artillery barrage and air strike from the CAF, Wright went forward with several artillery observers to investigate the terrain in front of his forces. Using concealed fire lanes, a Japanese machine-gun team killed Wright with a burst of fire at 09:30. Wright's second in command, Major Louis Franco, was unable to get forward and take command until late in the day, preventing the battalion from continuing the attack. At the same time, Japanese riflemen infiltrated the American positions and effectively harassed the command posts of both the 3rd and 1st Battalions as well as the column of heavily loaded American supply and engineer parties on the hacked-out jungle trail linking the battalions with the Lunga perimeter. Both U.S. battalions dug in for the night while artillery bombarded the Japanese positions. Between 20 and 23 December, the Japanese apparently withdrew from the area, as aggressive U.S. Army patrols encountered no more enemy in the area of Hills 20 and 21 and further to the south. Nelson ordered the two battalions to move west to Hill 31 and then attack south towards Hill 27. On 24 December, the 3rd Battalion was halted on the slopes of Hill 31 by intense machine-gun fire from well-concealed positions. Facing the Americans was the most strongly fortified Japanese position on Guadalcanal, nicknamed "the Gifu" (after Gifu Prefecture in Japan) by the Japanese. The Gifu position sat between the summits of Mount Austen and Hills 27 and 31 and consisted of a line of 45–50 interconnected, mutually supporting, well-camouflaged pillboxes dug into the ground and forming a horseshoe shape with the open end to the west. Only about of each pillbox was above ground with walls and roofs, constructed from logs and dirt, up to thick. Each pillbox contained one to two machine-guns and several riflemen; some were sited underneath huge jungle trees. Each of these pillbox emplacements was sited to provide mutual support to the others. Numerous foxholes and trenches provided additional support and cover for additional riflemen and machine-gunners. Behind the