This is a superscription that tells about the psalm. Some scholars say that this is part of the scripture and some say that it is not. (See "What are Superscriptions in Psalms" in [Introduction to Psalms](../front/intro.md).)
The words "hands" and "fingers" are synecdoches for "me." If "war" and "battle" are the same word in your language, you can translate this as one line. Alternate translation: "who trains me for war and trains me for battle" or "who trains me for war" (See: [[rc://en/ta/man/jit/figs-synecdoche]] and [[rc://en/ta/man/jit/figs-doublet]])