If you haven't searched the archives of  USGENWEB recently, you may be delighted to find their volunteers have been very busy, and have added a great deal of data over the past year. To access these treasures, click on the link above, choose your state of interest, then click on the archives link to search for your ancestors.

I did a brief search in Maine recently, and came up with the following gems of information.

Regiment        16TH MAINE INFANTRY
        Company Company "F"
Last Name Merrill
        First Name      George
        Middle Initial  E.
        Age     18
        Rank    Private
        Residence       Saco
        M/S     S
        Mustered into   August 14, 1862
        Date of Rank
        Remarks Killed at Fredericksburg December 13, 1862
 

Regiment        16TH MAINE INFANTRY
        Company Company "A"
        Last Name       Merrill
        First Name      Hiram
        Middle Initial  A.
        Age     26
        Rank    Private
        Residence       New Portland
        M/S     M
        Mustered into   August 14, 1862
        Date of Rank
        Remarks

        Regiment        16TH MAINE INFANTRY
        Company Company "E"
        Last Name       Merrill
        First Name      Frank
        Middle Initial  M.
        Age     19
        Rank    Musician
        Residence       Turner
        M/S     S
        Mustered into   August 14, 1862 
        Date of Rank
        Remarks Died of disease December 21, 1862

Good luck, and have fun!