Arm, soldiers of the Lord. S. A. Brooke. [The whole Armour of God.] Appeared in his Christian Hymns, 1891, No. 344, and in The Public School Hymn Book, 1903. It was evidently suggested by C. Wesley's hymn on the same subject, "Soldiers of Christ, arise," p. 1066, i.
--John Julian, Dictionary of Hymnology, New Supplement (1907)