Thousands of people have been flocking to sign up with the military. Local and national police offices are flooded with applications. Even sales of the French flag, which the French rarely display, have skyrocketed since the attacks, which left 130 dead.

“I’ve never seen anything like it,” said Col. Eric de Lapresle, a spokesman for the French Army’s recruiting service. “People are coming in and contacting us in droves through social media, using words like liberty, defense and the fight against terror.”…

Typically about 300 people a day seek to enlist in the French Army, Mr. de Lapresle said. Since the attacks, which President Francois Hollande declared to be an act of war, the numbers have quintupled to around 1,500 a day, through visits to recruiting centers and via the web portal sengager.fr…

“These attacks motivated me even more to protect my country,” said Mr. Moulin, 23, a former legal intern who said he had often thought about joining the army but now is newly determined. “The terrorists struck in the heart of Paris. If we don’t stop them, they will do it again.”