at first glance i thought the two small buttons at the top right might have been infantry buttons, but i think they are a lot newer. my dad was in the army in the 50s and he had a lot of buttons exactly like the ones pictured.
Need to flip those three eagles in the upper right over to look at backs and figure out what the backmarks are. Possibly CW more likely Indian Wars or later. Everything else appears to be 20th century.