Should this ever happen to you, here's the response.
I don't often "butt in" on these threads, but the obvious question to me is what are the rules governing Catholic communion as they pertain to military chaplains, especially under combat conditons? I know for a fact that Catholic chaplains routinely provide pastoral care for non-Catholics, and vice versa from Protestant chaplains to Catholics when the "other chaplain" is not available to minister to those of his faith. Until reading this article, however, I had never thought about this in the context of the sacraments.
Sharing Eucharistic outside of the Catholic communion is like sex outside of marriage: it may seem like an expression of love, but it denies the proper expression of love its place, and denies the significance of the unity which it is a symbol of.