God. Since“The Lord’s Prayer”, by its very title refers to the prayer uttered by Jesus , and since it is a definite part of Christian worship, it certainly falls under the prohibition of following the statutes of the Gentiles and should not appropriately be recited by a Jewish soldier.
Of course, a Chaplain when his duty requires of him to conduct non-Jewish worship, is under government command to do so, and that circumstance would fall under a different category.
Solomon B. Freehof , Chairman with Leo Jung , David Aronson (Responsa to Chaplains 1948-1953, Commission on Jewish Chaplaincy, National Jewish Welfare Board,New York , 1953,# 7).