 Complete the following phrase:  In 1808 Schwarz was appointed to lead a cavalry brigade in the 12,714-man Corps of Observation of the Eastern Pyrenees under the overall command of Guillaume Philibert Duhesme. The brigade consisted of the Italian Prince Royal Chasseurs a Cheval, 504 sabers and the 2nd Neapolitan Chasseurs a Cheval, 388 sabers. On 29 February 1808, on the pretext of having a military review of his division, Giuseppe Lechi rushed his troops into the fortress of Barcelona and hustled the bewildered Spanish garrison out. By such treachery, Emperor Napoleon seized Barcelona and other Spanish cities and precipitated war with his former ally. After the 