I mentioned in my earlier post, the book דרכה של תורה of Pineles - a book that someone of the erudition of Prof. Saul Lieberman refers to with great admiration. I now see that Hebrewbooks has added the refutation by his brother-in-law - כך דרכה של תורה (Vol. 1, and 2). Chanan Gafni in his excellent dissertation on Talmud study in the 19th century describes the polemic like this (click to enlarge - pages maybe out of order):
See there for a lot more of the same.
Some other new books:
A polemical pamphlet from R' Zevin urging Yeshiva Bachurim to go to the army (translated somewhre - probably Tradition).
Kisvei R' Yehuda Aryeh Modena (I think this was already at Seforimonline)