I’m guessing this “quote” is from this article.

If that’s the case, here is the actual paragraph:

The prisoner would be bent over a desk with his hands placed in front of him, handcuffed.

The female soldier, standing behind him, would insert her fingers and other objects into his rectum.

When he reacted or moved back, the soldier standing in front of him would hit him in the head and force him to bend again.

And further down in the article

“Nothing was more humiliating than when they made me take off my clothes, or when they inserted this object into my butt, or when a young female soldier kept [touching my penis].”

English is not my first language, but this does not sound like cavity search