The French Interior Ministry made the announcement a day before the 50th anniversary of renewed Franco-German relations after World War II.
German Chancellor Angela Merkel said in Berlin Saturday that the
reconciliation between the two countries was one of the world's most important.
Merkel and French President Francois Hollande are to attend a ceremony
Sunday in the French city of Reims to celebrate the reconciliation, symbolically achieved on July 8, 1962.
The desecration of the German graves happened in a cemetery some 40
kilometres (25 miles) east of the spot where the two leaders will meet to
celebrate their post-war ties.
French Interior Minister Manuel Valls strongly condemned the vandalism at
the Saint-Etienne-a-Arnes cemetery.
"An enquiry is underway and all means are being employed to find those
responsible for this terrible desecration," his ministry said in a statement.
According to initial information, some 40 wooden steles were pulled up and
some used for a camp fire.
It was not immediately possible to say whether this was a "determined
action" or just the work of "irresponsible people," a spokesman at the local
There were no signs of any political message, he added.
The alert was sounded on Saturday afternoon by the small village's town
hall, a source close to the enquiry said.
More than 12,000 German soldiers who perished in the Great War lie buried
at the cemetery in Saint-Etienne-a-Arnes, which extends over four hectares (10
They were among those who died in the Battle of Champagne in the first part
of the 1914-18 war.
More than 17 years after the end of World War II, then-French president
Charles de Gaulle and former German chancellor Konrad Adenauer "dared to
launch a new beginning, an extraordinary new start that led to one of the
world's most important friendships," Merkel said in her weekly online video