The President of the United States of America, in the name of Congress, takes pleasure in presenting the Medal of Honor to Private John William Mostoller, United States Army, for extraordinary heroism on 18 June 1864, while serving with Company B, 54th Pennsylvania Infantry, in action at Lynchburg, Virginia. Private Mostoller voluntarily led a charge on a Confederate battery (the officers of the company being disabled) and compelled its hasty removal.