Editing Corregidor (section)

==Fortifications==
There were 23 batteries installed on Corregidor, consisting of 56 coastal defense guns and [[Coast defense mortar|mortars]].  In addition, Corregidor had 13 anti-aircraft artillery batteries with 76 guns (28 3-inch and 48 .50-caliber) and 10 60-inch Sperry searchlights.

The longest-range coastal pieces were the two [[12-inch Gun M1895|{{convert|12|in|mm|0|adj=on}} guns]] of Batteries Hearn and Smith, with a horizontal range of {{convert|29000|yd|m|-3}}.  Although capable of an all around traverse, these guns, due to their flat trajectories, were not effective for use on defensive perimeter targets on [[Bataan]] and [[Cavite]], as their maximum elevation was 35 degrees.

During the siege, the island had ample armor-piercing ammunition but very little of the anti-personnel type, which then was of greatest demand for use against land targets on Bataan.  In fact, most of the anti-personnel shells were only for the 12-inch mortars of Batteries Way and Geary.

===Battery Monja===
Battery Monja is located on Wheeler Point. It was operated by Battery G of the [[92nd Coast Artillery (United States)|92nd Coast Artillery Regiment]], [[Philippine Scouts]]. The battery had two [[Canon de 155mm GPF|French 155mm GPF cannon]], both of which were hidden in the sides of the island's bluffs. One gun was commanded by 2LT Robert L. Obourn,  who claimed that, towards the end of the battle, "You could see the shells wobble towards the [enemy] ships. Our guns were reduced to nothing more than muskets."  Obourn's gun was struck and destroyed on April 28, 1942, killing 2 of his gunners. The remaining crew of Battery Monja continued to fight against the Japanese as guerrillas until July 18, 1942. Only 6 men, including Lt. Obourn, survived their capture. The 5 enlisted men that were serving as gunners for the battery attempted to escape from their temporary prison camp two days after capture; they all were killed during their attempted escape.

===Battery Way===
{{Main|Battery Way}}
[[Battery Way]], named for Lt. Henry N Way, which along with Battery Geary, was the mainstay of the Corregidor Garrison during the Japanese invasion.  Its four [[12-inch coast defense mortar|{{convert|12|in|mm|0|adj=on}} mortars]], capable of a 360-degree traverse, could fire on land targets at Bataan.  They brought the most destruction on Japanese positions during the attempted landings on the southwest coast of Bataan late in January to the middle of February 1942.  These mortars were silenced by enemy shelling in May 1942.

===Battery Geary===
Battery Geary was a battery of eight 13-ton, [[12-inch coast defense mortar|{{convert|12|in|mm|0|adj=on}} mortars]].  Defiladed in a hollow on Corregidor's Southern coast it was fairly well protected from Japanese shelling. On January 6, 1942, while under the command of Capt. Ben Ewing King, a Japanese bomb landed in a makeshift temporary bunker killing 31 of Battery Geary's NCOs and canoneers.

Early in the morning of January 26 Battery Geary opened fire on a unit of Japanese soldiers near Longaskawayan Point on the west side of the Bataan Peninsula during the [[Battle of Bataan|Battle of the Points]].<ref name="jw">{{cite book |last1=Whitman |first1=John |title=Bataan: Our Last Ditch |date=1990 |publisher=Hippocrene Books |location=New York |isbn=0870528777 |pages=262}}</ref>  This was the first time fixed coastal artillery had fired at an enemy since the close of the Civil War. Although the fire was considered accurate and effective, Col. Bunker decided to replace Capt. King and he was sent to perform the duties of fort XO and to command HQ Battery on Ft. Drum. He was replaced at Battery Geary by Capt. Thomas W. Davis. Later, this battery was pinpointed by the Japanese artillery and was subjected to heavy shelling.  One direct hit by a 240-mm shell, which detonated the magazines of this battery on May 2, 1942, proved to be the most crippling shot during the entire siege of Corregidor.  This explosion tossed the fifty ton barrel of the mortar around, one to a distance of {{convert|150|yd|m|-1}}, another was blown through three feet of reinforced concrete wall into the adjoining powder magazine of Battery Crockett.  Large chunks of steel were blown as far as the Malinta Tunnel, killing 27 of the battery crew instantly. Also, one mortar still had a live round in its breech, and it was in the process of firing the shell when the magazine was hit. That live anti-personnel round still lies within the breach of the mortar.{{citation needed|date=January 2021}}