 Complete the following phrase:  Battery E participated in the expedition to the Rio Grande from 27 October to 2 December 1863. On 6 November, the 13th Maine and 94th Illinois Infantry Regiments plus a Missouri battery occupied Brownsville. A total of 6,998 Union troops took part in the effort. The expeditions goals were to raise the U.S. flag in Texas, to cut off the cotton trade with Mexico, to damage the Texas economy, and to serve warning to the 