The Memorial Chapel is on the Walter Reed campus. It was built with funds raised by the Gray Ladies of the Red Cross Hospital Service and was dedicated in 1931 as a memorial to those who gave their lives in the service of their country. (The Gray Ladies were so called because of the gray uniform they wore.) The first ceremony performed was a wedding. Sunday services are still held there, and I saw funeral services being organized there last week.
It's a lovely place, inside and out.
Here's a picture of the stained glass window over the altar:
There are "gargoyles" at the top of the tower. Some of them represent the Gray Ladies:
and there are others that represent science and religion. Not sure which one this is.