There has long been a shortage in Chaplains in the Guard and reserve, as previously noted.  The Stars and Stripes notes that reservists are currently in high demand, as they are activated to fill posts of Chaplains who are deployed downrange.

Said one such Chaplain, who had been activated multiple times over the past decades:

“[The soldiers] sought reassurance that they were there for the right purposes. A lot of them had religious questions about God — ‘What does God think about this?’ People wanted to be baptized. There are no atheists or agnostics in foxholes.”