A driver is on the run after trying to ram a car into a group of soldiers who were jogging near their barracks in south-eastern France.
Soldiers of the 93rd Mountain Artillery Regiment managed to avoid the oncoming vehicle in Varces-Allières-et-Risset, near Grenoble.
Gendarmerie have sent out patrols nearby to check number plates. The car is reportedly a stolen Peugeot 208.
Police are not yet speculating about a motive for the attack.
The incident follows a hostage-taking at a supermarket in the south-western town of Trèbes, near Carcassonne, on 23 March.
A memorial service was held in Paris on Wednesday for Lt Col Arnaud Beltrame, a police officer who died after swapping himself for a hostage in the attack.
He and the three other victims will be laid to rest on Thursday. The 25-year-old gunman, who said he was acting on behalf of the Islamic State group, was shot dead by police.