While I have nothing more on these men, something here might prove to be just the clue that one of us needs. Leslie -- Historical Register and Dictionary of the US Army 1789-1903, Vol. 2 Alphabetical List of Officers of the Regular Army (From Its Organization, September 29, 1789, to 1903) Who Were Killed or Wounded in Action or Taken Prisoner, With Date and Place [if known]. page 27 Koehler, Edgar F., 1 lt 9 inf, 4 Mar 1900, Barrio Tinuba P I, killed. ------------------------------------------------------------------------ Alphabetical List of Officers of the Regular Army (From Its Organization, September 29, 1789, to 1903) Who Were Killed or Wounded in Action or Taken Prisoner, With Date and Place [if known]. page 119 Koehler, Anton P., maj 7 Ill cav. ------------------------------------------------------------------------ Alphabetical List of Officers of the Regular Army (From Its Organization, September 29, 1789, to 1903) Who Were Killed or Wounded in Action or Taken Prisoner, With Date and Place [if known] page 119 Koehler, Casper, lt col 3 Mo enrolled mil. ------------------------------------------------------------------------ Alphabetical List of Officers of the Regular Army (From Its Organization, September 29, 1789, to 1903) Who Were Killed or Wounded in Action or Taken Prisoner, With Date and Place [if known]. page 229 *Koehler, Benjamin M., maj 37 U S inf. ------------------------------------------------------------------------ Alphabetical List of Officers of the Regular Army (From Its Organization, September 29, 1789, to 1903) Who Were Killed or Wounded in Action or Taken Prisoner, With Date and Place [if known]. page 229 Koehler, Frederick E., capt 2 Ill inf.