For those like myself not already familiar with work of the The Corts Foundation, both of the enormous volumes already published (672 & 784 pages respectively) are available for download, free to all, as open access digital (.PDF) editions. (So you don't have to shell out 80 to 90 euros for each unless a hardback copy is essential for you.) No doubt the third will be also.
A download link for each of the earlier volumes can be found on both The Corts Foundation site and that for the University of Leiden:
"The (Japanese) invasion of the Dutch East Indies"
https://www.cortsfoundation.org/nieu...i-sosho-volume
and
https://openaccess.leidenuniv.nl/handle/1887/35184
"The Operations of the (Japanese) Navy in the Dutch East Indies and the Bay of Bengal"
https://www.cortsfoundation.org/news...i-sosho-volume
and also here:
https://openaccess.leidenuniv.nl/handle/1887/65910
Mr Kees Corts obviously also believed that in history the best way forward is to share the information.
To avoid wading through the Stone and Stone (very long, very specialised and ultra narrow viewpoint, with 50% comprising quotations) review, brief synopses for the published volumes taken from these web sites are:
for the first "The present book is the first complete and unabridged translation of a volume from the comprehensive Senshi Sōsho series. It enables military historians and the general public to see and study for the first time how the operation that put an end to Dutch colonial rule in Indonesia was planned and executed."
and for the second "The Operations of the Navy in the Dutch East Indies and the Bay of Bengal, volume 26 of the series, describes the Japanese Navy’s role in the campaign to gain control over the Indonesian archipelago – at that time the largest transoceanic landing operation in the military history of the world. It includes, among others, the first complete Japanese analysis of the Battle of the Java Sea, a much-debated battle that ended disastrously for the Allies and opened the way to Java for the Japanese." So this volume includes full coverage in the final chapter (IX starting at p.565 and ending p.659) of the raid by IJN's 1st, 2nd & 5th Carrier Divisions to Ceylon and into the Bay of Bengal. ("The Southern Task Force shall conduct the third carrier operation in the following way: it shall destroy the enemy power in the Ceylon area in a surprise attack, while striving to ensure a perfect escort at sea for [the forces of] the Burma operation.")
For background on this historical project a good start point is the landing page of The Corts Foundation web site:
https://www.cortsfoundation.org/
I suspect all of the above may only be new for me. However, my purpose here is to highlight that even though these immense volumes are very much pitched at a specialist readership, the fact that they are free resources also makes them readily availabe as an invaluable reference tool for those who wish only to take the odd dip into these waters.