Lt. Col. Virgil Ivan "Gus" Grissom

Lt. Cdr. Roger Bruce Chaffee

Battle of the Bulge Memorial

The Rough Riders Memorial is a memorial in Arlington National Cemetery residing in Arlington County, Virginia, United States of America. The memorial commemorates members of the "Rough Riders" who died in the Spanish–American War in 1898. The grey granite shaft was erected by surviving members of the Rough Riders and their friends and supporters.

https://en.wikipedia.org/wiki/Rough_Riders_Memorial

Rough Riders Monument

The Argonne Cross Memorial is a memorial to American military personnel who died fighting in France during World War I. It was erected on November 13, 1923, and stands in Section 18 of Arlington National Cemetery in Arlington County, Virginia, in the United States.

https://en.wikipedia.org/wiki/Argonne_Cross_Memorial