Much earlier in my research, this would have been a goldmine of information about my Grandfather. But this particular record was already attached to Leroy Parkinson Tanner back in 2016. What would have been more helpful would be information about his service in the War since registration was compulsory. There were actually three registrations. Here is a quote from the National Archives page on "World War I Draft Registration Cards."
During World War I there were three registrations. The first, on June 5, 1917, was for all men between the ages of 21 and 31. The second, on June 5, 1918, registered those who attained age 21 after June 5, 1917. (A supplemental registration was held on August 24, 1918, for those becoming 21 years old after June 5, 1918. This was included in the second registration.) The third registration was held on September 12, 1918, for men age 18 through 45Here is a further explanation of the Draft Registration from the same article.
The registration cards consist of approximately 24,000,000 cards of men who registered for the draft, (about 23% of the population in 1918). It is important to note that not all of the men who registered for the draft actually served in the military and not all men who served in the military registered for the draft. Moreover these are not military service records. They end when an individual reports to the army training camp. They contain no information about an individual's military service.These are extremely valuable records because they often identify an individual with more specificity than any other easily available and searchable records. The Historical Record Collections on FamilySearch.org contain 24,999,338 World War I Draft Registration Cards, probably the entire collection from the National Archives. Here is a screenshot of the search page.
My Grandfather is now listed on his FamilySearch.org Family Tree as a "Military Figure."
This link takes me to more information about the Mexican Border War where he also served.
When I view the record this is where I end up.
These links from FamilySearch are providing valuable background information and records about our ancestors.