1) FYI There were 2 Airfields at Del Monte
1 was a fighter/emergency strip , the other was the only
B-17 capable strip on Mindanao.
2) There was a small emergency airstrip (Kindley) on the eastern tail of Corregidor.
3) There was a small civilian field at Puerto Princesa ( Palawan ) a short distance SW of the current airport ,
and at right angles to it west of Lacao Rd ( likely where the soccer field is based now).
This is an excerpt from a war dept essay on defences in the Philippines in 1942 , which includes some descriptions of the nature of the airfields at the time :
"FEAF airfields
Within 80 mi (130 km) of Manila, the Army had six airfields (Clark, Nichols, Nielson, Iba, Del Carmen, and Rosales), two of which were auxiliary strips nearing completion. Another four auxiliary strips were begun in November: O'Donnell and San Fernando near Clark, San Marcelino northwest of Subic Bay, and Ternate west of Cavite (Ternate and San Fernando were never finished). No strips were planned on Bataan, despite its prominence in strategic war planning. In August and October 1941, the War Department allocated US$9,273,000 (approximately $150 million in 2015 dollars) to construct and improve airfields, most of which was spent constructing a concrete runway at Nichols Field (the only hard-surfaced runway in the Philippines). Additional graded strips were also added or extended to the grass runways at Clark Field, with the rest of the allocated funds used to build the auxiliary fields. The auxiliary strips were dirt-surfaced and without maintenance, servicing, communications, or control facilities. The dust clouds generated by takeoffs at all strips except Nichols seriously hampered flight operations, with numerous mishaps that destroyed many aircraft, killed pilots, and reduced the assigned strength of already tiny combat missions. The use of expedients to cut down the dust, including a molasses mixture deposited by a tank truck, was unsuccessful.
Del Monte Field was operated by FEAF on the island of Mindanao. In November 1941, with the B-17s of the 7th Bomb Group expected to arrive in December, Clark Field was still the only base that could support heavy bombers but its all-grass parking areas and taxi strips could not withstand heavy operations when wet, making dispersal nearly impossible. Informed that three more groups were projected to arrive in January and February, MacArthur and his chief of staff, Brig. Gen. Richard K. Sutherland, favored new bomber bases in the Visayas but recognized that selected sites at Cebu and Tacloban would not support bomber operations without significant and expensive construction of runways. As a compromise, on 24 November 1941 the newly arrived 5th Air Base Group was hurried 800 mi (1,300 km) south to northern Mindanao by inter-island steamer to build a second bomber base for the 7th BG. Begun 27 November on the site of an emergency landing strip surveyed in September 1941, the new base was situated next to the Sayre National Highway 1.5 mi (2.4 km) northwest of Tankulan in Bukidnon Province.
Established in a "natural meadow" on a high plateau 21 mi (34 km) southeast of Cagayan City, and flanked on both sides by low hills, the site was in a pineapple plantation owned by the Del Monte Corporation. It needed only the cutting of grass to create a hard, all-weather sod runway. Del Monte No. 1, the bomber runway, was ready for limited operations by 5 December. A much smaller pre-war liaison strip, situated across the highway to the southwest on a small golf course, was designated Del Monte No. 3, and a parallel runway for fighter operations later cut northeast of the bomber runway was called Del Monte No. 2.
After Japanese intruder and weather reconnaissance flights were detected on several successive nights, sixteen B-17s of the 14th and 93d Bombardment Squadrons were dispersed from Clark to Del Monte No. 1 on the night of 5–6 December, circling until dawn (5 December in the United States) before landing. They intended to remain only 72 hours because neither maintenance facilities nor barracks had yet been built, and only a single radio was operating. Two understrength ordnance companies from Clark had preceded them to Del Monte on 3 December and constructed their own camp in Tankulan, but the remainder of their personnel and all the materiel required, particularly aviation gas, did not depart Luzon until 10 December. For several months after hostilities began, work continued on another Del Monte strip in the barrio of Dalirig, 4 mi (6.4 km) east of the bomber strip, and at crude but well-camouflaged dispersal fields located 25 mi (40 km) to 40 mi (64 km) further inland at Malaybalay, Valencia and Maramag in Bukidnon Province.
Lubao Field on Luzon, in the barrio of Prado in Pampanga Province, became the location for a new airfield after Clark and Nichols were neutralized by the Japanese. Begun in sugarcane fields along Highway 7 near the entrance to Bataan by 400 Filipino laborers under the supervision of Philippine Army engineers, the 3,600 ft (1,100 m) fighter strip was still not completed when most of the 21st Pursuit Squadron commanded by 1st Lt. William E. Dyess arrived from Manila on 15 December. Working around the clock, the combined force completed construction of the runway, constructed revetments and graded taxiways in preparation for basing a dozen P-40s and five P-35s there, flown by a mixed assortment of experienced pilots from all five pursuit squadrons. Lubao Airfield began operations on 26 December and was superbly camouflaged. The 21st PS flew reconnaissance and other missions from Lubao until 2 January 1942, when the field was evacuated. On 29 December, three pursuits (two P-40s and a P-35) were salvaged at the last minute at Clark Field in the face of advancing Japanese units by a volunteer group of mechanics and flown to Lubao, where they were evacuated with the others.
Five fighter strips were opened on Bataan to support defensive operations during the withdrawal and subsequent siege:
• Orani Field. A camouflaged dirt strip on the upper end of Bataan also opened operations on 26 December. The 34th PS received its transfer orders on Christmas Day and conducted twice daily reconnaissance flights using five P-40s. The 2,800 ft (850 m) field was camouflaged using rice straw and movable haystacks, and was not attacked before it too was abandoned, on 4 January.
• Pilar Field. Aircraft withdrawing from both Lubao and Orani were flown to an airfield near Pilar which had been graded in rice fields by Filipino hand labor. Revetments had been built and camouflaged in one day on 26 December by the 17th PS. Operations at Pilar began on 1 January using the final three new P-40Es of the 25 November shipment, which were assembled in the last week of December at the Philippine Air Depot, relocated to Quezon City. The last mission from Pilar was flown 8 January, after which its nine P-40 aircraft displaced to Del Monte Field, Mindanao (only six arrived).
• Bataan Field. The primary fighter base after the withdrawal into Bataan was originally graded in early 1941 as a 2,000 ft (610 m) dirt strip running uphill from a coastal road. Dubbed "Richards' Folly" after the Department Air Officer who had ordered its construction, it was located on the Manila Bay side of Bataan about three miles north of Cabcaben, a village on the southern tip of the peninsula. The runway was widened and lengthened to 5,100 ft (1,600 m) after 24 December by the 803rd Aviation Engineers in anticipation of future operations. The first aircraft, two P-35s and an A-27 displaced from Lubao, arrived on 2 January, and on 4 January the nine P-40s at Orani were sent down. Combat operations began on 8 January, the aircraft concealed in hidden revetments until they could be launched between raids made by Japanese dive bombers. The P-35s were flown to Mindanao on 11 January after the A-27 was lost in a landing accident. Maintenance and operation of the field was assigned to the 16th Bombardment Squadron (27th Bomb Group), which had no aircraft, and damage to the runways from raids was repaired by Company C, 803rd Aviation Engineers.
• Cabcaben Field. At the end of January 1942 a strip 3,900 ft (1,200 m) in length was hastily graded by civilian contractors 2.5 mi (4.0 km) south of Bataan Field and made operational as a dispersal field on 6 February. The 21st PS was recalled from infantry duties on 12 February to operate and maintain both it and Bataan airfields.
• Mariveles Field. The existing dirt liaison field at the southernmost point on Bataan was abandoned on 7 January, but at the end of the month a road adjacent to the field was extended and widened to provide a new fighter strip 65 ft (20 m) in width and 3,800 ft (1,200 m) long. Its orientation to the overlooking heights was such that once a pilot was committed to landing, he had no choice but to continue, and was subject to severe tail-winds. The 20th Pursuit Squadron was also recalled on 12 February to complete defensive position preparations, camouflage revetments, and maintain the field, which became operational on 23 February.
Warning systems
The "Warning Service" of the Philippine Department was directed by Lt. Col. Alexander H. Campbell, who had originally transferred to the Philippines in October 1939 to command a battalion of the 60th Coast Artillery (AA). Functioning as an office of the Intelligence Section (G-2) of the department headquarters, the Warning Service operated an interim "Information and Operation Center" at Nielson Field that included an electrically lighted map to plot sightings that indicated origins of reports with twinkling lights. In lieu of working detection equipment and trained personnel, the Warning Service maintained a primitive system of 509 observation posts manned by 860 civilian watchers, unschooled in aircraft identification, who would report airplane movements by five radio, two telegraph, and ten telephone networks manned by members of all three U.S. military services, the Philippine Army and constabulary, the Philippine postal system, and civilian companies in the provinces. Interpreters were required for the many dialects used by the observers. Message processing encountered significant delays between the time of observation and time of report.
On 4 May 1941, the Warning Service was shifted to the new PDAF as the "Air Warning Service". A newly trained 194-man Signal Corps air warning company arrived by transport on 1 August to operate two SCR-271C fixed-location air tracking radars planned for deployment on Luzon, each with a range of 150 mi (240 km). Campbell immediately prepared a study for Clagett recommending 24-hour operations and modern aircraft detection equipment, specifically two mobile SCR-270B units and nine SCR-271s, allotting eight units to Luzon and three to Mindanao, and expanding the force to a 915-man battalion. He also suggested that radars be established at some future time on the islands of Lubang, Samar, Palawan, Jolo, Basilan, Tablas, Panay, and Negros.
His specific recommendation was in line with the one SCR-270/seven SCR-271 recommendation of the Air Defense Board just received by the War Department, and was endorsed by MacArthur on 8 September with a recommendation for funds. MacArthur was notified by wire the next day that an SCR-270 and two SCR-271s were already in transit to the Philippines by ship for use by the air warning company, with three more SCR-270s to follow in October. However, by 15 November, when the AWS was integrated into the new 5th Interceptor Command, plans for the fixed-location radar sites were only five percent complete and no date to begin construction had been set. The 557th Air Warning Battalion was designated to provide the expanded early warning defense, and was at its port of embarkation at San Francisco on 6 December.
The AWS received seven SCR-270 mobile units but only two were operating on 8 December: one in full operation at Iba, and a Marine Corps unit training at Nusugbu in Batangas Province. The latter was assigned to the Air Warning Detachment of the 1st Separate Marine Battalion in late November to provide protection to the Navy base. The Iba unit had been operational since 18 October and was fully functioning. On 29 November, in response to the war warning sent to all overseas commands by Marshall, the detachment went on continuous watch in three shifts.
Three Army detachments with mobile units and the Marine detachment were ordered into the field on 3 December with instructions to be in operation by 10 December. Of the Army detachments, at the onset of hostilities one had just reached position at Burgos, Ilocos Norte, in northwest Luzon; another was at Tagaytay, Cavite, with a damaged set; and the third was newly established at Paracale, Camarines Norte, in southeastern Luzon, where it had just completed calibration tests. The two fixed-location SCR-271s were in storage.
USAFFE also received 11 sets of SCR-268 antiaircraft radars, a searchlight-control radar that could also be used for gun laying of AA weapons. After the FEAF was forced to withdraw into Bataan to continue operations, its primitive fields were subject to frequent attack from Luzon-based aircraft of the Japanese Army. An SCR-268 of the 200th Coast Artillery was placed in operation on the hillside above Cabcaben Airfield. Used in conjunction with the sole surviving SCR-270B unit, hidden in the jungle a mile from Bataan Field, it served as an early warning system and was linked to headquarters of the 5th Interceptor Command at Mariveles. Takeoffs and landings by the Bataan Field Flying Detachment required towing of P-40s off the runways to and from hidden revetments, and were vulnerable to strafing. The ad hoc system facilitated coordination of field operations, and while imperfect, no aircraft were lost during takeoffs or landings. "
I have located my folder with the Philippine Research , so if you want it just pm me your email address.
I also have a little research on the rail-lines in the Philippines , but this work is incomplete and quite sketchy.
I have some good photos of Cavite , though they are easy to find on the net.
This is a great project .
Kopfdorfer