Hector G. Mallen (TX) & Gail C. Kuhn (DC)

Hi,
Three years ago I adopted the graves of 2 US soldiers, I'm looking for any info on them.
Here is the info I received of them when I adopted their graves:

Name: Hector G. Mallen
Rank: Private first class
Service #: 38678743
Unit: 318th Infantry regiment, 80th Division
Date of death: April 11th 1944
State: Texas

He is a member of Company C, 1st platoon.
He is from Crystal city, Zavala County. His father is called Vicente Gonzalez. He has got at least one brother who is called Vincente. He died during the attack on Erfurt, Germany.He is a graduate of Austin, Texas state university Pharmacy. I have a picture of him.

Name: Gail C. Kuhn
Rank: 1st LT
Service #: 01323148
Unit: 119th Infantry regiment, 30th Division
Date of death: April 3th 1945
State: DC

He was a member of Company C
Left a widow behind called Margareth S. Kuhn in Washington DC.
His parents were called Edward J. Kuhn and Beulah M. Kuhn, they lived in Orlando, FL.
He died near Augustdorf, Germany

I have received the IDPF's of both.
Anyone knows more ?