Answer: usg

AnswerCrossword Clue
USGAppomattox initials
USGPres. before RBH
USG18th Pres.
USGCivil War inits.
USGMonogram of the 18th pres.
USGBattle of Shiloh monogram
USGMonogram for our 18th Pres.
USGMonogram for the 18th U.S. president