The youngest of three children born to Anna Govan and Amos Gailliard, Sr in New York City.

Amos Gailliard, Jr. fondly referred to as "Junnie" by his two sisters, Julia and Jessie (deceased).

In his post college years, would marry Barbara Jean Miles of Harlem, NY and adopted three children Michael Dallum (Michael Stephen Gailliard) and then later Cathy Evans (Donna Lynn Gailliard) and finally, Donna Marie Wilson (Tracey Michelle Gailliard-Williams).

He was commander of the 14th Group, New York Guard which was upgraded to brigade status under his leadership and provided support operations at the TWA flight 800 disaster recovery site.

As a Col he would serve in HHC, Army Division, Civil Affairs as part of the 14th GRP (LI).