A reserve of 600 gendarmes under La Palisse was behind the centre.
The corps of gendarmes was also incorporated in this department, the under-secretary of the interior being placed at its head and at that of the police generally, with practically unlimited jurisdiction in all cases which, in the judgment of the minister of the interior, required to be dealt with by processes outside the ordinary law.
In 1896 the powers of the minister were extended at the expense of those of the under-secretary, who remained only at the head of the corps of gendarmes; but by a law of the 24th of September 1904 this was again reversed, and the under-secretary was again placed at the head of all the police with the title of undersecretary for the administration of the police.
The left wing was composed of the papal contingent, 6000 infantry and 800 gendarmes under Fabrizio Colonna; the centre, of half the Spanish contingent, 4000 infantry and 600 lancers under the viceroy; the right, of 1000 light horse under Pescara.
Once in the plain they were charged by the French gendarmes under Gaston himself, as well as by the landsknechts, and driven back.