hospitalized (too sick to fight or move, or ambulatory helping care for others) (9,000 men)
Total Force: 61,500
civilians: 10,000 remain who could not be evacuated due to lack of space
At the start of the Bataan campaign USAFE Bataan had 112,000 men and there were around 12,000 civilians. Nearly 18,000 have been evacuated, of which 4,500 were moved to southern Luzon, 7,000 were captured by the Japanese in the final medical evacuation convoy, and the remainder went to Australia including nearly all US and Philippine Army Air Force and Navy/Coast Guard personnel. Another 5,000 US Army, US Army National Guard, US Marine Corps, Philippine Scouts and Philippine Army troops went to Corregidor (and were replaced by 3,000 Philippine Army troops). Nearly 2,000 civilians were successfully evacuated to the central Philippine islands as well. Another 3,000 wounded and sick military personnel were evacuated and 1,000 of these made it to Australia, the rest were captured during the Fall of Cebu.
Casualties to date, not including those listed as hospitalized above, number approximately 30,500, including 3,000 Americans and roughly 25,000 of these are dead or missing (almost certainly dead). Around 90% of those dead are Filipino military personnel, the rest American.
There are only around 5,000 American military personnel remaining on Bataan as of April 19, of which 1,000 are assigned as advisers or commanders of Philippine Army/Philippine Scouts, another 400 are assigned to the 6th Cavalry Brigade, and the rest are rear area personnel (usually specialists of some sort) or in the hospital (about 1,000).
April 20
Furious that the Navy has let the Americans break out two nights in a row, the Japanese Army orders every available bomber to concentrate on Mariveles and any vessels and boats that can be found. Embarrassed, the Navy also commits its full air strength in theater to the same task. With ammunition supplies running lower and lower, the 3rd and 4th Philippine Army Coast Artillery Regiments defend as best they can, and indeed inflict significant losses on the Japanese but cannot prevent the effective destruction of every building, every pier and a lot of the trees that are in Mariveles. Months of campaign and bombing have encouraged the American and Filipinos there to dig deep, so personnel losses are relatively light, but by night fall the entire area is masked in smoke and flame. Only a few fishing vessels survive until nightfall, mainly as they were hidden in caves and dugouts, but none of the remaining vessels of the Philippine Coast Guard have survived aside from a handful of motor launches hidden in caves and tunnels on Corregidor.
That night, aware that no more chances are likely, King sends the remaining men of the 6th Cavalry Brigade to Corregidor except for the 100 survivors of the 194th Tank Battalion, which mans the few remaining working combat vehicles and will have the task of ensuring their destruction when it is time to surrender. The other troops (200 each in the 112th and 26th Cavalry, 100 from the 192nd Tank Battalion) are formed into a weak battalion that will act as the reserve on Corregidor.
The arrival of the USS Seawolf that night is also seen as a good opportunity to evacuate several Filipinos whose fate upon capture is viewed as certain death, included Carlos Romulo as well as the surviving members of the 2 PT boats (including Commander Andrade). Room is also found for several members of the Bataan Aviation Detachment who were operating the airfield.
These are the last American and Filipino personnel evacuated from Bataan. Remaining boats are retained on Corregidor and the other harbor islands for communications duties along with their crews.
April 21-28
Daily air raids continue to focus on the rear area of the USAFE, attacking likely looking areas hoping to hit supply dumps, artillery positions, headquarters and reserve positions. While little damage is done, it does result in a steady stream of casualties into the already crowded hospitals. However on April 27, a raid of 27 Japanese Army bombers drop their entire bomb load on Hospital Number 2. This kills nearly 800 wounded along with 50 medical personnel and civilian volunteers, and is the worst raid in terms of casualties since the start of the war. Post war investigation determines that this was not purposeful, merely poor bombing, as haze from numerous fires from the attacks over the previous few days resulted in the Japanese bombing too early instead of their planned attack on an identified supply dump nearby. Filipinos and Americans are certain however this was a deliberate atrocity for the entire rest of the war.
By the end of April 28th, antiaircraft ammunition has been nearly exhausted, and the remaining guns and their crews are moved that night to positions held by Philippine Scout regiments to beef up the backstop line. The remnants of the 192nd Tank Battalion takes over local security for General King's headquarters.
The raids over the previous few days since April 19 have added another 2,000 wounded to those already in the hospital while also killing 1,000 people.