Waterboarding Used to Be a Crime
In this case from the tribunal's records, the victim was a prisoner in the Japanese-occupied Dutch East Indies:
A towel was fixed under the chin and down over the face. Then many buckets of water were poured into the towel so that the water gradually reached the mouth and rising further eventually also the nostrils, which resulted in his becoming unconscious and collapsing like a person drowned. This procedure was sometimes repeated 5-6 times in succession.
The United States (like Britain, Australia and other Allies) pursued lower-ranking Japanese war criminals in trials before their own tribunals. As a general rule, the testimony was similar to Nielsen's
Here's the testimony of two Americans imprisoned by the Japanese:
They would lash me to a stretcher then prop me up against a table with my head down. They would then pour about two gallons of water from a pitcher into my nose and mouth until I lost consciousness.
And from the second prisoner: They laid me out on a stretcher and strapped me on. The stretcher was then stood on end with my head almost touching the floor and my feet in the air. . . . They then began pouring water over my face and at times it was almost impossible for me to breathe without sucking in water.
As a result of such accounts, a number of Japanese prison-camp officers and guards were convicted of torture that clearly violated the laws of war. They were not the only defendants convicted in such cases. As far back as the U.S. occupation of the Philippines after the 1898 Spanish-American War, U.S. soldiers were court-martialed for using the "water cure" to question Filipino guerellas