soldier from my former unit. if you can help, thank you. 

This sounds so rough:

Lymphoblastic leukemia is an aggressive form of cancer where immature leukemia cells continue to reproduce and buildup. Without treatment, most people with acute leukemia would live only a few months. Shawn underwent chemotherapy and had an allogeneic stem cell transplant in 2013. He was in remission and things were looking up for his family, Jennifer, Shane, and Zealand. However, in 2014 after his one-year bone marrow biopsy Shawn relapsed and was readmitted into the hospital in Buffalo, NY. for treatment.

I am sad to say that he lost his battle today. 

Oh no! So sad.