Observation and study of exclusive protonic $B$ decays to $D^{(*)} p\bar{p}\ n\pi$, $n=0,1,2$ final states

Using a data sample of $211 {\rm fb}^{-1}$ recorded by the BaBar detector at the PEP-II asymmetric-energy $e^+e^-$ $B$ Factory at SLAC, we perform measurements of the branching fractions for ten Cabibbo-favored $B$ decays to final states of the form ${\bar B}^0,~B^- \rightarrow D^{(*)} p\bar{p}\ n\pi$, $n=0,1,2$.