15 Oct | Yesterday's Trivia Subject:

This Day in Military History: October 15

Yesterday's Trivia Challenge Answers

On this day in 1863, what was the name of the Confederate submarine that sank during a practice dive, killing its inventor (and namesake) and entire crew?

In 1528, the advance of the Ottoman Empire was turned back during what pivotal battle on this day?

On this day in 1917, what infamous agent was executed by firing squad for spying for the German Empire?

This Month's Prize

FitBit Zip Activity Tracker
Win a FitBit Zip Activity Tracker. All Military.com members are invited to enter a Trivia Challenge at a chance to win a FitBit Zip Activity Tracker.