 Complete the following phrase:  On December 13, 1861, Peirce joined the volunteer forces as colonel of the 29th Massachusetts Infantry Regiment. His regiment was located at Fort Monroe and was involved in the battle of Hampton Roads. He was court-martialed for presenting burlesque shows to the troops of his command and for incompetency, but was acquitted. Peirce then fought in the Peninsula Campaign and the Seven Days Battles where, on June 30, 1862, he lost his right arm at the 