Timeslip Troopers

In Timeslip Troopers (1923), a squadron of World War I soldiers from the Trenches is transported back to the Spanish town of Valencia in the 14th century where they ally themselves with the Moors to fight the Spanish Inquisition. While it is one of several French novels inspired by H. G. Wells' The Time Machine -- purporting, in fact, to be its sequel -- it has more in common with Mark Twain's A Connecticut Yankee in the Court of King Arthur, in that its timeslipped protagonists set out to ...