To hire a car to tour the Somme memorials, you'll find major car-rental companies at the train station.
Amiens is an important rail hub, with the following direct services:
Arras €13.10, 45 minutes, hourly
Boulogne-sur-Mer €21.70, 1¾ hours, seven to nine daily
Compiègne €14.20, 1¼ hours, eight to 13 daily
Laon €19, 1½ hours, five to 11 daily
Lille-Flandres €22.20, 1½ hours, six to 12 daily
Paris Gare du Nord €22.80, one to 1½ hours, 14 to 21 daily
Rouen €21.40, 1¼ hours, four to seven daily
SNCF buses link Amiens' train station with the Haute-Picardie TGV station (€10, 45 minutes, six to eight daily), 40km east of the city.
Regional bus services operate from Amiens' bus station, just north of the train station.