Original:  The Chilean military expedition against Santa Cruz, led by Admiral Manuel Blanco Encalada  failed and had to submit to the signature of the Treaty of Paucarpata, on November 17, 1837.
Revised:  The Chilean military expedition against Santa Cruz, led by Admiral Manuel Blanco Encalada , failed and had to submit to the signature of the Treaty of Paucarpata, on November 17, 1837.
Edit intent: fluency